{"id":2111,"date":"2017-07-18T00:11:46","date_gmt":"2017-07-17T16:11:46","guid":{"rendered":"http:\/\/www.bookcard.net\/wordpress\/?p=2111"},"modified":"2017-07-18T00:17:00","modified_gmt":"2017-07-17T16:17:00","slug":"radioactive_attenuation","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/radioactive_attenuation\/","title":{"rendered":"\u653e\u5c04\u6027\u8870\u51cf"},"content":{"rendered":"<figure id=\"attachment_2113\" aria-describedby=\"caption-attachment-2113\" style=\"width: 1024px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2017\/07\/Radioactive_attenuation.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2113\" src=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2017\/07\/Radioactive_attenuation.jpg\" alt=\"\u653e\u5c04\u6027\u8870\u6e1b\" width=\"1024\" height=\"768\" srcset=\"https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2017\/07\/Radioactive_attenuation.jpg 1024w, https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2017\/07\/Radioactive_attenuation-300x225.jpg 300w, https:\/\/www.bookcard.net\/wordpress\/wp-content\/uploads\/2017\/07\/Radioactive_attenuation-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption id=\"caption-attachment-2113\" class=\"wp-caption-text\">\u653e\u5c04\u6027\u8870\u6e1b<\/figcaption><\/figure>\n<p>\u653e\u5c04\u6027\u8870\u51cf<\/p>\n<p>\u653e\u5c04\u6027\u8870\u6e1b,\u4f8b\u5982\u923e\u5728\u4e00\u500b\u7d66\u5b9a\u7684\u55ae\u4f4d\u6642\u9593\u5167\u662f\u6309\u5176\u54c1\u8cea\u7684\u767e\u5206\u6bd4\u8870\u6e1b\u7684,\u63cf\u8ff0\u8870\u6e1b\u7387\u7684\u65b9\u6cd5\u662f\u7d66\u51fa\u8a72\u7269\u8cea\u54c1\u8cea\u8870\u6e1b\u4e00\u534a\u6240\u7528\u7684\u6642\u9593\u9031\u671f.\u9019\u500b\u6642\u9593\u9031\u671f\u7a31\u4f5c\u8a72\u7269\u8cea\u7684\u534a\u8870\u671f.\u5c0d\u65bc\u653e\u5c04\u6027\u8870\u6e1b\u5169\u500b\u534a\u8870\u671f\u4e26\u4e0d\u8cfc\u6210\u4e00\u500b\u5168\u8870\u671f.\u4e8b\u5be6\u4e0a\u5728\u5169\u500b\u534a\u8870\u671f\u7684\u6642\u9593\u9031\u671f\u88cf\u8a72\u7269\u8cea\u8870\u6e1b\u5230\u539f\u54c1\u8cea\u7684(1\/2)*(1\/2)=1\/4<\/p>\n<p>\u6700\u6709\u540d\u7684\u653e\u5c04\u6027\u7269\u8cea\u4e4b\u4e00\u662f\u78b3-14,\u5b83\u5e38\u88ab\u7528\u65bc\u78ba\u5b9a\u6709\u6a5f\u7269\u7684\u5e74\u4ee3,\u7576\u4e00\u584a\u6728\u982d\u6216\u9aa8\u982d\u9084\u662f\u6d3b\u8457\u7684\u6709\u6a5f\u9ad4\u7684\u4e00\u90e8\u5206\u6642\u5b83\u5c31\u7a4d\u805a\u4e86\u653e\u5c04\u6027\u7684\u78b3-14,\u56e0\u800c\u78b3-14\u5728\u8a72\u7269\u9ad4\u7684\u542b\u78b3\u4e2d\u4f54\u6709\u4e00\u5b9a\u6bd4\u4f8b,\u800c\u4e00\u65e6\u6709\u6a5f\u9ad4\u6b7b\u4ea1\u5b83\u5c31\u4e0d\u80fd\u5728\u901a\u904e\u65bc\u5916\u90e8\u74b0\u5883\u7372\u5f97\u78b3-14,\u5982\u901a\u904e\u98df\u7269\u548c\u547c\u5438.<\/p>\n<p>\u901a\u904e\u6e2c\u5b9a\u8a72\u7269\u9ad4\u4e2d\u78b3-14\u6240\u5360\u7684\u6bd4\u4f8b\u505a\u6bd4\u8f03\u5c31\u80fd\u4f30\u7b97\u51fa\u539f\u4f86\u7684\u78b3-14\u5df2\u7d93\u8870\u6e1b\u4e86\u591a\u5c0f,\u78b3-14\u7684\u534a\u8870\u671f\u5927\u7d04\u662f5730\u5e74,\u56e0\u6b645730\u5e74\u5f8c\u8a72\u7269\u8cea\u6240\u542b\u7684\u78b3-14\u662f\u5b83\u5728\u4e16\u6642\u7684\u6240\u5728\u7684\u4e00\u534a\u65e21\/2.<\/p>\n<p>11463\u5e74\u5f8c\u542b\u6709\u7684\u78b3-14\u53ea\u5269\u4e0b1\/4. 17190\u5e74\u5f8c\u53ea\u5269\u4e0b1\/8.<\/p>\n<p>&nbsp;<\/p>\n<p>\u5728\u4e00\u500b\u6642\u9593\u9031\u671ft\u4e4b\u5f8c,\u78b3-14\u6240\u5269\u4e0b\u7684\u91cf\u53ef\u4ee5\u5beb\u6210\u4e00\u500b\u6307\u6578\u51fd\u6578<\/p>\n<p>\u516c\u5f0f:C=C0(1\/2)<sup>(t\/5370)<\/sup><\/p>\n<p>C0:\u78b3-14\u539f\u6709\u7684\u542b\u91cf<\/p>\n<p>1\/2:\u8870\u6e1b\u4e00\u534a<\/p>\n<p>5730:\u78b3-14\u7684\u534a\u8870\u671f5730\u5e74C<\/p>\n<p>t:\u4ee5\u5e74\u55ae\u4f4d\u7684\u6642\u9593<\/p>\n<p>C:\u78b3-14\u5269\u4e0b\u7684\u542b\u91cf<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u653e\u5c04\u6027\u8870\u51cf \u653e\u5c04\u6027\u8870\u6e1b,\u4f8b\u5982\u923e\u5728\u4e00\u500b\u7d66\u5b9a\u7684\u55ae\u4f4d\u6642\u9593\u5167\u662f\u6309\u5176\u54c1\u8cea\u7684\u767e\u5206\u6bd4\u8870\u6e1b\u7684,\u63cf\u8ff0\u8870\u6e1b\u7387\u7684\u65b9\u6cd5\u662f\u7d66\u51fa\u8a72\u7269\u8cea\u54c1\u8cea &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.bookcard.net\/wordpress\/radioactive_attenuation\/\" class=\"more-link\">\u7e7c\u7e8c\u95b1\u8b80 <span class=\"screen-reader-text\">\u653e\u5c04\u6027\u8870\u51cf<\/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":[14,11],"tags":[],"class_list":["post-2111","post","type-post","status-publish","format-standard","hentry","category-tech","category-algorithm","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/2111","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=2111"}],"version-history":[{"count":2,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/2111\/revisions"}],"predecessor-version":[{"id":2114,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/2111\/revisions\/2114"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=2111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=2111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=2111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}