{"id":291,"date":"2021-09-14T10:32:47","date_gmt":"2021-09-14T02:32:47","guid":{"rendered":"http:\/\/49.235.202.190\/?p=291"},"modified":"2021-09-14T11:19:54","modified_gmt":"2021-09-14T03:19:54","slug":"%e7%90%86%e8%ae%ba%e5%8a%9b%e5%ad%a6%e9%a9%bb%e8%af%be%e7%ac%94%e8%ae%b0%ef%bc%88%e4%b8%89%ef%bc%89","status":"publish","type":"post","link":"https:\/\/shuaiwang.cc\/?p=291","title":{"rendered":"\u7406\u8bba\u529b\u5b66\u9a7b\u8bfe\u7b14\u8bb0\uff08\u4e09\uff09"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>\u65e5\u671f\uff1a2021\u5e749\u670814\u65e5<\/p>\n\n\n\n<p>\u5730\u70b9\uff1a\u4e00\u53f7\u697c<\/p>\n\n\n\n<hr 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\\( \\mathbf{P} =q\\mathbf{r}\\)\u3002\u5bf9\u4e8e\u4e00\u4e2a\u7535\u8377\u5bc6\u5ea6\u5206\u5e03\u4e3a \\(\\rho(\\mathbf{r})\\)\uff09\u800c\u8a00\uff0c\u7535\u5076\u6781\u77e9\u4e3a\u4f53\u79ef\u5206   \\( \\mathbf{P} =\\int_v  \\rho(\\mathbf{r}) \\mathbf(r)\/ d \\text{v}\\) ,\u662f\u4e00\u4e2a\u77e2\u91cf\u3002\u540c\u65f6\u8fd8\u5b58\u5728\u9ad8\u9636\u77e9\uff0c\u5982\u56db\u6781\u5b50\uff08quadrapole\uff09 \\( \\mathbf{P} =\\int_v  \\rho(\\mathbf{r}) \\otimes  \\mathbf(r) \\mathbf(r)\/ d \\text{v}\\) \u4e3a\u4e00\u4e2a\u4e8c\u9636\u5f20\u91cf\u3002<\/p>\n\n\n\n<p>\u529b\u5b66\u4e2d\uff0c\u4f4d\u7f6e\u4e0e\u529b\u7684\u53c9\u79ef\u4e5f\u662f\u4e00\u4e2a\u77e2\u91cf\uff0c\u88ab\u79f0\u4e3a\u529b\u77e9\uff08moment \u6216torque\uff09\u3002\u7406\u8bba\u529b\u5b66\u4e2d\uff0c\u5bc6\u5ea6\u5206\u5e03\u7684\u96f6\u9636\u77e9\u662f\u8d28\u91cf\u5927\u5c0f\uff0c\u4e00\u9636\u77e9\u523b\u753b\u8d28\u5fc3\uff0c\u4e8c\u9636\u77e9\u662f\u8f6c\u52a8\u60ef\u91cf\uff08moment of inertia,\u6216\u8005\u53eb\u8d28\u91cf\u60ef\u6027\u77e9\uff09\u6ce8\u610f\u8fd9\u91cc\\(\\\\mathbf{r}^2\\)\u53d6\u77e2\u91cf\u70b9\u79ef\u3002\u6750\u6599\u529b\u5b66\u4e2d\u5bf9\u4e8e\u67d0\u4e00\u622a\u9762\u53ef\u4ee5\u5bf9\u67d0\u4e00\u4e2a\u8f74\u53d6\u77e9\uff0c\u53eb\u505a\u9762\u79ef\u4e8c\u6b21\u8f74\u77e9\uff08second axial moment of area\uff09\uff0c\u53c8\u79f0\u9762\u79ef\u60ef\u6027\u77e9\uff0c\u6216\u9762\u79ef\u5bf9\u67d0\u4e00\u8f74\u7684\u60ef\u6027\u77e9\u3002<\/p>\n\n\n\n<p>\u52a8\u91cf\u5bf9\u67d0\u4e00\u70b9\u53d6\u77e9\uff0c\u53eb\u505a\u89d2\u52a8\u91cf\uff08angular momentum\uff09\\(\\mathbf{L}\\times\\mathbf{r}\\)\uff0c\u8fd9\u91cc\u662f\u53c9\u79ef\u3002<\/p>\n\n\n\n<hr 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class=\"screen-reader-text\">\u201c\u7406\u8bba\u529b\u5b66\u9a7b\u8bfe\u7b14\u8bb0\uff08\u4e09\uff09\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-291","post","type-post","status-publish","format-standard","hentry","category-11","entry"],"_links":{"self":[{"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/posts\/291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=291"}],"version-history":[{"count":4,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/posts\/291\/revisions"}],"predecessor-version":[{"id":298,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=\/wp\/v2\/posts\/291\/revisions\/298"}],"wp:attachment":[{"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shuaiwang.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}