{"id":17668,"date":"2022-02-28T00:12:30","date_gmt":"2022-02-27T16:12:30","guid":{"rendered":"http:\/\/www.jdcui.com\/?p=17668"},"modified":"2022-06-05T13:04:40","modified_gmt":"2022-06-05T05:04:40","slug":"%e6%95%b0%e5%ad%a6%e5%87%a0%e4%bd%95-%e9%98%bf%e5%9f%ba%e7%b1%b3%e5%be%b7%e8%9e%ba%e6%97%8b%e7%ba%bf-archimedes-spiral","status":"publish","type":"post","link":"http:\/\/www.jdcui.com\/?p=17668","title":{"rendered":"[\u6570\u5b66][\u51e0\u4f55] \u963f\u57fa\u7c73\u5fb7\u87ba\u65cb\u7ebf (\u7b49\u901f\u87ba\u65cb\u7ebf) [Archimedes&#8217; spiral]"},"content":{"rendered":"<p><span style=\"color: #ff00ff; background-color: #ccffcc; font-size: 10pt;\"><strong>\u5b9e\u5e72\u3001\u5b9e\u8df5\u3001\u79ef\u7d2f\u3001\u601d\u8003\u3001\u521b\u65b0\u3002<\/strong><\/span><\/p>\n<hr \/>\n<p>\u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\uff08\u4ea6\u79f0\u7b49\u901f\u87ba\u7ebf\uff09(Archimedean spiral)\uff0c\u5f97\u540d\u4e8e\u516c\u5143\u524d\u4e09\u4e16\u7eaa\u5e0c\u814a\u6570\u5b66\u5bb6\u963f\u57fa\u7c73\u5fb7\u3002\u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\u662f\u4e00\u4e2a\u70b9\u5300\u901f\u79bb\u5f00\u4e00\u4e2a\u56fa\u5b9a\u70b9\u7684\u540c\u65f6\u53c8\u4ee5\u56fa\u5b9a\u7684\u89d2\u901f\u5ea6\u7ed5\u8be5\u56fa\u5b9a\u70b9\u8f6c\u52a8\u800c\u4ea7\u751f\u7684\u8f68\u8ff9\u3002\u66f4\u591a\u7684\u4ecb\u7ecd\u53ef\u4ee5\u53c2\u89c1\uff1a<strong><a href=\"https:\/\/baike.baidu.com\/item\/%E9%98%BF%E5%9F%BA%E7%B1%B3%E5%BE%B7%E8%9E%BA%E7%BA%BF\/6174118?fromtitle=%E9%98%BF%E5%9F%BA%E7%B1%B3%E5%BE%B7%E8%9E%BA%E6%97%8B%E7%BA%BF&amp;fromid=11003955&amp;fr=aladdin\" target=\"_blank\" rel=\"noopener\">\u963f\u57fa\u7c73\u5fb7\u87ba\u65cb\u7ebf\u767e\u5ea6\u767e\u79d1\u8bcd\u6761<\/a><\/strong>\u3002<\/p>\n<p>\u7b80\u5355\u7684\u8bf4\u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\u53ef\u4ee5\u7528\u6781\u5750\u6807\u8868\u793a\u4e3a\uff1a<\/p>\n<p>r = a+b*\u03b8\uff1b<\/p>\n<p>\u5176\u4e2d\u5176\u4e2d a \u548c b \u5747\u4e3a\u5b9e\u6570\uff0c\u03b8\u4e3a\u8f6c\u89d2\u3002\u5f53\u03b8=0\u65f6\uff0ca\u4e3a\u8d77\u70b9\u5230\u6781\u5750\u6807\u539f\u70b9\u7684\u8ddd\u79bb,b\u4e3a\u87ba\u65cb\u7ebf\u6bcf\u589e\u52a0\u5355\u4f4d\u89d2\u5ea6r\u968f\u4e4b\u5bf9\u5e94\u589e\u52a0\u7684\u6570\u503c\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u5c06\u6781\u5750\u6807\u8f6c\u6362\u4e3a\u7b1b\u5361\u5c14\u5750\u6807\uff1a<\/p>\n<p>x = (a+b*\u03b8)*cos(\u03b8)\uff1b<\/p>\n<p>y = (a+b*\u03b8)*sin(\u03b8)\uff1b<\/p>\n<p>\u4e8e\u662f\u5c31\u53ef\u4ee5\u975e\u5e38\u7b80\u5355\u753b\u51fa\u56fe\u5f62\u4e86\uff0c\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u6211\u4eec\u7528EXCEL\u6765\u4f5c\u56fe\u3002<\/p>\n<p>\u4ee5\u4e0b\u662fb=0\u60c5\u51b5\u4e0b\uff0c a=0\u53caa=1000 \u65f6\u7684\u87ba\u65cb\u7ebf:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17674\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_1.png\" alt=\"\" width=\"1083\" height=\"633\" srcset=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_1.png 1083w, http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_1-768x449.png 768w\" sizes=\"auto, (max-width: 1083px) 100vw, 1083px\" \/><\/p>\n<p>\u4ee5\u4e0b\u662fa=0\u60c5\u51b5\u4e0b\uff0c b=10\u53cab=15\u65f6\u7684\u87ba\u65cb\u7ebf:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17675\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_2.png\" alt=\"\" width=\"1247\" height=\"677\" srcset=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_2.png 1247w, http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/spiral_2-768x417.png 768w\" sizes=\"auto, (max-width: 1247px) 100vw, 1247px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>\u6700\u540e\u6211\u4eec\u53ef\u4ee5\u628a\u66f2\u7ebf\u5bfc\u5165\u4e4b\u524d\u7684\u7f16\u5199\u7684 GAAGM\u8f6f\u4ef6\u00a0<strong><a title=\"[\u8f6f\u4ef6][\u5de5\u5177][\u7f16\u7a0b] GAAGM: Graph Animation and Animated Gif Maker [\u66f2\u7ebf\u56fe\u52a8\u753b\u53caGif\u52a8\u56fe\u751f\u6210\u5de5\u5177]\" href=\"http:\/\/www.jdcui.com\/?p=13993\" target=\"_blank\" rel=\"noopener\">[\u8f6f\u4ef6][\u5de5\u5177][\u7f16\u7a0b] GAAGM: Graph Animation and Animated Gif Maker [\u66f2\u7ebf\u56fe\u52a8\u753b\u53caGif\u52a8\u56fe\u751f\u6210\u5de5\u5177]<\/a><\/strong>\uff0c\u5236\u4f5c\u6f02\u4eae\u7684\u66f2\u7ebf\u52a8\u56fe\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17678\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/Animation_spiral_2-min.gif\" alt=\"\" width=\"747\" height=\"665\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17677\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2022\/02\/Animation_spiral_1-min.gif\" alt=\"\" width=\"747\" height=\"665\" \/><\/p>\n<ul style=\"list-style-type: square;\">\n<li><span style=\"font-size: 10pt;\"><strong>\u76f8\u5173\u535a\u6587 (<span style=\"color: #000080;\"> Related Topics)<\/span><\/strong><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 10pt;\"><strong>[01] <a href=\"http:\/\/www.jdcui.com\/?p=9639\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u51e0\u4f55] \u7f16\u7a0b\u8bad\u7ec3: \u51f8\u5305\u95ee\u9898 [Convex-Hull Problem]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[02] <a href=\"http:\/\/www.jdcui.com\/?p=9647\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u51e0\u4f55] \u7f16\u7a0b\u8bad\u7ec3: \u79bb\u6563\u70b9\u7684\u95ed\u5408\u8def\u5f84 [Closed Path for points]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[03] <a href=\"http:\/\/www.jdcui.com\/?p=9675\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u51e0\u4f55] \u7f16\u7a0b\u8bad\u7ec3: 3\u6b21B\u6837\u6761\u66f2\u7ebf [Cubic BSpline]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[04] <a href=\"http:\/\/www.jdcui.com\/?p=9678\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u51e0\u4f55] \u7f16\u7a0b\u8bad\u7ec3: \u65c5\u884c\u5546\u95ee\u9898<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[05] <a href=\"http:\/\/www.jdcui.com\/?p=9680\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u51e0\u4f55] \u7f16\u7a0b\u8bad\u7ec3: 3\u6b21Bezier\u66f2\u7ebf [Cubic Bezier Curve]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[06] <a href=\"http:\/\/www.jdcui.com\/?p=9696\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u6e38\u620f][\u5f00\u53d1] \u7f16\u7a0b\u8bad\u7ec3\uff1a\u6570\u72ec\u6e38\u620f ( Sudoku )<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[07] <a href=\"http:\/\/www.jdcui.com\/?p=10381\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u8f6f\u4ef6][Programming] \u7f16\u7a0b\u8bad\u7ec3\uff1a\u6a21\u62df\u9000\u706b\u7b97\u6cd5(Simulated annealing algorithm)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[08] <a href=\"http:\/\/www.jdcui.com\/?p=10440\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u4f18\u5316] \u7f16\u7a0b\u8bad\u7ec3\uff1a\u51fd\u6570\u7684CONLIN\u7ebf\u6027\u5316<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[09] <a href=\"http:\/\/www.jdcui.com\/?p=10446\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u7b97\u6cd5][\u4f18\u5316] \u7f16\u7a0b\u8bad\u7ec3\uff1a\u51fd\u6570\u7684\u79fb\u52a8\u6e10\u8fdb\u7ebf(MMA)\u8fd1\u4f3c<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[09] <a href=\"http:\/\/www.jdcui.com\/?p=13123\" rel=\"noopener noreferrer\">[\u7f16\u7a0b\u8bad\u7ec3][Programming Training] URL Encode and Decode<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[10] <a href=\"http:\/\/www.jdcui.com\/?p=8752\" rel=\"noopener noreferrer\">[\u6e38\u620f][\u7f16\u7a0b][\u6311\u6218] Programming challenge: Tetris Game [\u7f16\u7a0b\u6311\u6218: \u4fc4\u7f57\u65af\u65b9\u5757\u6e38\u620f]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[11] <a href=\"http:\/\/www.jdcui.com\/?p=7264\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u8f6f\u4ef6][Tool] \u5e78\u8fd0\u5927\u62bd\u5956\u7a0b\u5e8f Lucky Draw<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[12] <a href=\"http:\/\/www.jdcui.com\/?p=1301\" rel=\"noopener noreferrer\">Buffon\u2019s Needle problem [\u84b2\u4e30\u6295\u9488\u95ee\u9898]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[13] <a href=\"http:\/\/www.jdcui.com\/?p=1587\" rel=\"noopener noreferrer\">[Game][\u6e38\u620f]CJD Core Ball[\u89c1\u7f1d\u63d2\u9488\u6e38\u620f]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[14] <a href=\"http:\/\/www.jdcui.com\/?p=1353\" rel=\"noopener noreferrer\">Sierpinski Triangle by 1D Cellular Automata [1D\u5143\u5305\u81ea\u52a8\u673a\u5b9e\u73b0Sierpinski\u4e09\u89d2\u5f62]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[15] <a href=\"http:\/\/www.jdcui.com\/?p=1651\" rel=\"noopener noreferrer\">Cellular Automata Forest Fire Model [\u5143\u5305\u81ea\u52a8\u673a\u68ee\u6797\u706b\u707e\u6a21\u578b]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[16] <a href=\"http:\/\/www.jdcui.com\/?p=1524\" rel=\"noopener noreferrer\">Conway\u2019s Game of Life [\u751f\u547d\u6e38\u620f]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[17] <a href=\"http:\/\/www.jdcui.com\/?p=789\" rel=\"noopener noreferrer\">Mandelbrot Set &amp; Julia Set [\u5206\u5f62]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[18] <a href=\"http:\/\/www.jdcui.com\/?p=88\" rel=\"noopener noreferrer\">Morley\u2019s Theorem [\u83ab\u5229\u5b9a\u7406]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[19] <a href=\"http:\/\/www.jdcui.com\/?p=17\" rel=\"noopener noreferrer\">Pascal\u2019s Theorem [\u5e15\u65af\u5361\u5b9a\u7406]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[20]\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=13184\">[\u7f16\u7a0b\u8bad\u7ec3][Programming Training] Gaussian Distribution (\u9ad8\u65af\u5206\u5e03)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[21] <a href=\"http:\/\/www.jdcui.com\/?p=13192\">[\u7f16\u7a0b\u8bad\u7ec3]Programming Training: Get Host<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[22] <a href=\"http:\/\/www.jdcui.com\/?p=13218\">[\u7f16\u7a0b\u8bad\u7ec3]Programming Training: Rotate Text<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[23] <a href=\"http:\/\/www.jdcui.com\/?p=13592\">[\u7f16\u7a0b\u8bad\u7ec3] \u79bb\u6563\u70b9\u7684Delaunay\u4e09\u89d2\u5f62\u5256\u5206( Delaunay triangulation of a point set)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[24] <a href=\"http:\/\/www.jdcui.com\/?p=13597\">[\u7f16\u7a0b\u8bad\u7ec3] \u56fe\u50cf\u5206\u5272 (Image segmentation)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[25] <a href=\"http:\/\/www.jdcui.com\/?p=13599\">[\u7f16\u7a0b\u8bad\u7ec3] \u62fc\u56fe\u6e38\u620f (Jigsaw Puzzle Game)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[26] <a href=\"http:\/\/www.jdcui.com\/?p=13614\">[\u7f16\u7a0b\u8bad\u7ec3][Programming Training] Random number generator \u2013 Uniform Distribution (\u968f\u673a\u6570\u751f\u6210\u5668-\u5747\u5300\u5206\u5e03)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[27] <a href=\"http:\/\/www.jdcui.com\/?p=13810\" target=\"_blank\" rel=\"noopener noreferrer\">[\u62bd\u5956][\u8f6f\u4ef6][\u7f16\u7a0b][\u5e74\u4f1a] 2020\u516c\u53f8\u5e74\u4f1a\u62bd\u5956 (\u56fe\u7247\u62bd\u5956) (RBS16\u5468\u5e74\u7eaa\u5ff5\u7248) (Run by souls)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[28] <a href=\"http:\/\/www.jdcui.com\/?p=14118\" target=\"_blank\" rel=\"noopener noreferrer\">[\u7f16\u7a0b\u8bad\u7ec3][\u6e38\u620f][\u6570\u5b66] \u7ea2\u9152\u676f\u4e0e\u767d\u9152\u676f\u91cc\u5230\u5e95\u6709\u591a\u5c11\u7ea2\u9152\u548c\u767d\u9152\uff1f<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[29] <a title=\"[\u6570\u5b66][\u7b97\u6cd5] \u6700\u5c0f\u4e8c\u4e58\u6cd5\u66f2\u7ebf\u62df\u5408( Least square curve fitting )\" href=\"http:\/\/www.jdcui.com\/?p=15600\" target=\"_blank\" rel=\"noopener noreferrer\">[\u6570\u5b66][\u7b97\u6cd5] \u6700\u5c0f\u4e8c\u4e58\u6cd5\u66f2\u7ebf\u62df\u5408( Least square curve fitting )<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[30] <a title=\"[\u7f16\u7a0b][\u6570\u5b66][\u7f16\u7a0b\u8bad\u7ec3] |x|^n+|y|^n=1\u5c0f\u7c73logo\u8f6e\u5ed3\u66f2\u7ebf\" href=\"http:\/\/www.jdcui.com\/?p=16029\" target=\"_blank\" rel=\"noopener noreferrer\">[\u7f16\u7a0b][\u6570\u5b66][\u7f16\u7a0b\u8bad\u7ec3] |x|^n+|y|^n=1\u5c0f\u7c73logo\u8f6e\u5ed3\u66f2\u7ebf<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[31] <a title=\"[\u6570\u5b66][\u7f16\u7a0b] \u8499\u7279\u5361\u6d1b\u6a21\u62df\u6cd5\u6c42\u5706\u5468\u7387\u03c0 (Monte Carlo method to find PI)\" href=\"http:\/\/www.jdcui.com\/?p=17385\" target=\"_blank\" rel=\"noopener\">[\u6570\u5b66][\u7f16\u7a0b] \u8499\u7279\u5361\u6d1b\u6a21\u62df\u6cd5\u6c42\u5706\u5468\u7387\u03c0 (Monte Carlo method to find PI)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[32] <a title=\"[\u7f16\u7a0b\u8bad\u7ec3] BMP\u56fe\u50cf\u7f29\u653e (BMP Image scaling)\" href=\"http:\/\/www.jdcui.com\/?p=17472\" target=\"_blank\" rel=\"noopener\">[\u7f16\u7a0b\u8bad\u7ec3] BMP\u56fe\u50cf\u7f29\u653e (BMP Image scaling)<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[33] <a title=\"[\u7f16\u7a0b\u8bad\u7ec3] \u7c92\u5b50\u7fa4\u4f18\u5316\u7b97\u6cd5 [PSO: Particle Swarm Optimization]\" href=\"http:\/\/www.jdcui.com\/?p=17499\" target=\"_blank\" rel=\"noopener\">[\u7f16\u7a0b\u8bad\u7ec3] \u7c92\u5b50\u7fa4\u4f18\u5316\u7b97\u6cd5 [PSO: Particle Swarm Optimization]<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[34] <a title=\"[\u7f16\u7a0b][\u7b14\u8bb0] \u5982\u4f55\u5c06n^m\u4e2a\u53ef\u80fd\u679a\u4e3e\u51fa\u6765\uff1f\" href=\"http:\/\/www.jdcui.com\/?p=17579\" target=\"_blank\" rel=\"noopener\">[\u7f16\u7a0b][\u7b14\u8bb0] \u5982\u4f55\u5c06n^m\u4e2a\u53ef\u80fd\u679a\u4e3e\u51fa\u6765\uff1f<\/a><\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>[35] <a title=\"[\u6570\u5b66][\u7f16\u7a0b][\u6df7\u6c8c] \u866b\u53e3\u6a21\u578b\u7684\u6570\u503c\u6a21\u62df [Numerical simulation of insect population model]\" href=\"http:\/\/www.jdcui.com\/?p=17603\" target=\"_blank\" rel=\"noopener\">[\u6570\u5b66][\u7f16\u7a0b][\u6df7\u6c8c] \u866b\u53e3\u6a21\u578b\u7684\u6570\u503c\u6a21\u62df [Numerical simulation of insect population model]<\/a><\/strong><\/span><\/p>\n<hr \/>\n<p style=\"padding-left: 30px; text-align: center;\"><span style=\"font-size: 10pt;\"><strong><div  class=\"thumbs-rating-container\" id=\"thumbs-rating-17668\" data-content-id=\"17668\"><button class=\"thumbs-rating-up thumbs-rating-voted\" onclick=\"thumbs_rating_vote(17668, 1);\">Vote Up +3<\/button> <button class=\"thumbs-rating-down\" onclick=\"thumbs_rating_vote(17668, 2);\">Vote Down -0<\/button><span class=\"thumbs-rating-already-voted\">You already voted!<\/span><\/div><\/strong><\/span><\/p>\n<ul style=\"list-style-type: square;\">\n<li style=\"text-align: left;\"><span style=\"font-size: 10pt;\"><strong>\u5fae\u4fe1\u516c\u4f17\u53f7\u00a0(<span style=\"color: #000080;\">\u00a0Wechat\u00a0Subscription)<\/span><\/strong><\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span style=\"font-size: 10pt;\"><a href=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2017\/01\/QRCODE.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3636\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2017\/01\/QRCODE.jpg\" alt=\"WeChat_QRCode\" width=\"250\" height=\"255\" \/><\/a><\/span><span style=\"font-size: 10pt;\"><a href=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2017\/01\/QRCODE.jpg\"><strong><span style=\"color: #333333;\">\u6b22\u8fce\u5173\u6ce8\u00a0<span style=\"color: #ff00ff;\">\u201c\u7ed3\u6784\u4e4b\u65c5\u201d\u00a0<\/span>\u5fae\u4fe1\u516c\u4f17\u53f7<\/span><\/strong><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9e\u5e72\u3001\u5b9e\u8df5\u3001\u79ef\u7d2f\u3001\u601d\u8003\u3001\u521b\u65b0\u3002 \u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\uff08\u4ea6\u79f0\u7b49\u901f\u87ba\u7ebf\uff09(Archimedean spiral)\uff0c\u5f97\u540d\u4e8e\u516c\u5143\u524d\u4e09\u4e16\u7eaa\u5e0c\u814a\u6570\u5b66\u5bb6\u963f\u57fa\u7c73\u5fb7\u3002\u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\u662f\u4e00\u4e2a\u70b9\u5300\u901f\u79bb\u5f00\u4e00\u4e2a\u56fa\u5b9a\u70b9\u7684\u540c\u65f6\u53c8\u4ee5\u56fa\u5b9a\u7684\u89d2\u901f\u5ea6\u7ed5\u8be5\u56fa\u5b9a\u70b9\u8f6c\u52a8\u800c\u4ea7\u751f\u7684\u8f68\u8ff9\u3002\u66f4\u591a\u7684\u4ecb\u7ecd\u53ef\u4ee5\u53c2\u89c1\uff1a\u963f\u57fa\u7c73\u5fb7\u87ba\u65cb\u7ebf\u767e\u5ea6\u767e\u79d1\u8bcd\u6761\u3002 \u7b80\u5355\u7684\u8bf4\u963f\u57fa\u7c73\u5fb7\u87ba\u7ebf\u53ef\u4ee5\u7528\u6781\u5750\u6807\u8868\u793a\u4e3a\uff1a r = a+b*\u03b8\uff1b \u5176\u4e2d\u5176\u4e2d a \u548c b \u5747\u4e3a\u5b9e\u6570\uff0c\u03b8\u4e3a\u8f6c\u89d2\u3002\u5f53\u03b8=0\u65f6\uff0ca\u4e3a\u8d77\u70b9\u5230\u6781\u5750\u6807\u539f\u70b9\u7684\u8ddd\u79bb,b\u4e3a\u87ba\u65cb\u7ebf\u6bcf\u589e\u52a0\u5355\u4f4d\u89d2\u5ea6r\u968f\u4e4b\u5bf9\u5e94\u589e\u52a0\u7684\u6570\u503c\u3002 \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u5c06\u6781\u5750\u6807\u8f6c\u6362\u4e3a\u7b1b\u5361\u5c14\u5750\u6807\uff1a x = (a+b*\u03b8)*cos(\u03b8)\uff1b y = (a+b*\u03b8)*sin(\u03b8)\uff1b \u4e8e\u662f\u5c31\u53ef\u4ee5\u975e\u5e38\u7b80\u5355\u753b\u51fa\u56fe\u5f62\u4e86\uff0c\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u6211\u4eec\u7528EXCEL\u6765\u4f5c\u56fe\u3002 \u4ee5\u4e0b\u662fb=0\u60c5\u51b5\u4e0b\uff0c a=0\u53caa=1000 \u65f6\u7684\u87ba\u65cb\u7ebf: \u4ee5\u4e0b\u662fa=0\u60c5\u51b5\u4e0b\uff0c b=10\u53cab=15\u65f6\u7684\u87ba\u65cb\u7ebf: &nbsp; \u6700\u540e\u6211\u4eec\u53ef\u4ee5\u628a\u66f2\u7ebf\u5bfc\u5165\u4e4b\u524d\u7684\u7f16\u5199\u7684 GAAGM\u8f6f\u4ef6\u00a0[\u8f6f\u4ef6][\u5de5\u5177][\u7f16\u7a0b] GAAGM: Graph &#8230;<\/p>\n","protected":false},"author":1,"featured_media":17679,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[3294,3296,3295,1364,3254,324,135,3297,3292,3293],"class_list":["post-17668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-math-geometry","tag-archimedes","tag-gaagm","tag-spiral","tag-1364","tag-3254","tag-324","tag-135","tag-3297","tag-3292","tag-3293"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"CJD\"\/>\n\t<meta name=\"keywords\" content=\"archimedes,gaagm,spiral,\u51e0\u4f55,\u52a8\u56fe,\u52a8\u753b,\u6570\u5b66,\u66f2\u7ebf\u52a8\u56fe,\u87ba\u65cb\u7ebf,\u963f\u57fa\u7c73\u5fb7\" \/>\n\t<link 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