{"id":177,"date":"2024-09-07T17:36:11","date_gmt":"2024-09-07T09:36:11","guid":{"rendered":"https:\/\/www.bihec.com\/think-srs\/?p=177"},"modified":"2024-09-07T17:36:11","modified_gmt":"2024-09-07T09:36:11","slug":"sr560","status":"publish","type":"post","link":"https:\/\/www.bihec.com\/think-srs\/sr560\/","title":{"rendered":"SRS,Stanford Research Systems,SR560,\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668"},"content":{"rendered":"<div class=\"flex-1 overflow-hidden\">\n<div class=\"h-full\">\n<div class=\"react-scroll-to-bottom--css-cdzlk-79elbk h-full\">\n<div class=\"react-scroll-to-bottom--css-cdzlk-1n7m0yu\">\n<div class=\"flex flex-col text-sm md:pb-9\">\n<article class=\"w-full text-token-text-primary focus-visible:outline-2 focus-visible:outline-offset-[-4px]\" dir=\"auto\" data-testid=\"conversation-turn-47\" data-scroll-anchor=\"true\">\n<div class=\"text-base py-[18px] px-3 md:px-4 m-auto w-full md:px-5 lg:px-1 xl:px-5\">\n<div class=\"mx-auto flex flex-1 gap-4 text-base md:gap-5 lg:gap-6 md:max-w-3xl\">\n<div class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex max-w-full flex-col flex-grow\">\n<div class=\"min-h-[20px] text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"79bbf2e2-4fd6-4457-bf52-309260a27e00\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p><strong><a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/srs\/\" title=\"View all posts in SRS\" target=\"_blank\">SRS<\/a>,<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/stanford-research-systems\/\" title=\"View all posts in Stanford Research Systems\" target=\"_blank\">Stanford Research Systems<\/a>,<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/sr560\/\" title=\"View all posts in SR560\" target=\"_blank\">SR560<\/a>,<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/%e4%bd%8e%e5%99%aa%e5%a3%b0%e7%94%b5%e5%8e%8b%e5%89%8d%e7%bd%ae%e6%94%be%e5%a4%a7%e5%99%a8\/\" title=\"View all posts in \u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668\" target=\"_blank\">\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668<\/a><\/strong><\/p>\n<p><strong>SR560 \u2014 <a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/%e4%bd%8e%e5%99%aa%e5%a3%b0\/\" title=\"View all posts in \u4f4e\u566a\u58f0\" target=\"_blank\">\u4f4e\u566a\u58f0<\/a>\u7535\u538b<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/%e5%89%8d%e7%bd%ae%e6%94%be%e5%a4%a7%e5%99%a8\/\" title=\"View all posts in \u524d\u7f6e\u653e\u5927\u5668\" target=\"_blank\">\u524d\u7f6e\u653e\u5927\u5668<\/a><\/strong><\/p>\n<p><strong>\u6982\u8ff0<\/strong><\/p>\n<p>SR560 \u662f\u4e00\u6b3e\u9ad8\u6027\u80fd\u3001\u4f4e\u566a\u58f0\u7684\u524d\u7f6e\u653e\u5927\u5668\uff0c\u9002\u7528\u4e8e\u4f4e\u6e29\u6d4b\u91cf\u3001\u5149\u5b66\u68c0\u6d4b\u548c\u97f3\u9891\u5de5\u7a0b\u7b49\u591a\u79cd\u5e94\u7528\u3002<\/p>\n<p><strong>\u8f93\u5165<\/strong><\/p>\n<p>SR560 \u5177\u6709 4 nV\/\u221aHz \u7684\u8f93\u5165\u566a\u58f0\u548c <a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/100\/\" title=\"View all posts in 100\" target=\"_blank\">100<\/a> M\u03a9 \u7684\u8f93\u5165\u963b\u6297\u3002\u8f93\u5165\u5b8c\u5168\u6d6e\u52a8\uff08BNC \u5c4f\u853d\u4e0d\u63a5\u5730\uff09\u3002\u524d\u9762\u677f\u4e0a\u53ef\u4ee5\u7528\u5c0f\u87ba\u4e1d\u5200\u8c03\u6574\u8f93\u5165\u504f\u7f6e\u7684\u96f6\u70b9\u3002\u9664\u4e86\u4fe1\u53f7\u8f93\u5165\u5916\uff0c\u540e\u9762\u677f\u8fd8\u6709 TTL \u6d88\u9690\u8f93\u5165\uff0c\u53ef\u4ee5\u5feb\u901f\u5f00\u542f\u6216\u5173\u95ed\u4eea\u5668\u7684\u589e\u76ca\uff0c\u4ee5\u9632\u6b62\u524d\u7aef\u8fc7\u8f7d\u3002TTL \u7535\u5e73\u53d8\u9ad8\u540e 5 \u00b5s \u5185\u589e\u76ca\u5173\u95ed\uff0c\u800c TTL \u4fe1\u53f7\u53d8\u4f4e\u540e 10 \u00b5s \u5185\u589e\u76ca\u91cd\u65b0\u5f00\u542f\u3002<\/p>\n<p><strong>\u8f93\u51fa<\/strong><\/p>\n<p>\u4e24\u4e2a\u7edd\u7f18\u8f93\u51fa BNC \u8fde\u63a5\u5668\u63d0\u4f9b 600 \u03a9 \u548c 50 \u03a9 \u8f93\u51fa\uff0c\u5747\u53ef\u9a71\u52a8 10 Vpp \u7684\u8d1f\u8f7d\u3002\u540e\u9762\u677f\u63d0\u4f9b\u4e24\u4e2a\u7535\u6e90\u8f93\u51fa\uff0c\u63d0\u4f9b\u9ad8\u8fbe 200 mA \u7684 \u00b112 VDC\uff0c\u4f5c\u4e3a\u504f\u7f6e\u7535\u6e90\u4f7f\u7528\u3002<\/p>\n<p><strong>\u589e\u76ca<\/strong><\/p>\n<p>\u589e\u76ca\u53ef\u5728 1 \u5230 50,000 \u4e4b\u95f4\u9009\u62e9\uff0c\u589e\u76ca\u8bbe\u7f6e\u91c7\u7528 1-2-5 \u5e8f\u5217\u3002\u53ef\u8c03\u589e\u76ca\u529f\u80fd\u5141\u8bb8\u60a8\u4ee5 0.5% \u5206\u8fa8\u7387\u5c06\u589e\u76ca\u6307\u5b9a\u4e3a\u4efb\u4f55\u56fa\u5b9a\u589e\u76ca\u8bbe\u7f6e\u7684\u767e\u5206\u6bd4\u3002\u589e\u76ca\u53ef\u4ee5\u9009\u62e9\u6027\u5730\u5206\u914d\u5728\u6ee4\u6ce2\u5668\u4e4b\u524d\u6216\u4e4b\u540e\uff0c\u4ee5\u4f18\u5316\u566a\u58f0\u6027\u80fd\u6216\u51cf\u5c11\u8fc7\u8f7d\u7684\u654f\u611f\u6027\u3002<\/p>\n<p><strong>\u6ee4\u6ce2\u5668<\/strong><\/p>\n<p>SR560 \u5185\u7f6e\u4e24\u4e2a\u4e00\u9636 RC \u6ee4\u6ce2\u5668\uff0c\u524d\u9762\u677f\u53ef\u914d\u7f6e\u5176\u622a\u6b62\u9891\u7387\u548c\u7c7b\u578b\uff08\u9ad8\u901a\u6216\u4f4e\u901a\uff09\u3002\u6ee4\u6ce2\u5668\u53ef\u4ee5\u914d\u7f6e\u4e3a 6 \u6216 12 dB\/oct \u7684\u4f4e\u901a\u6216\u9ad8\u901a\u6ee4\u6ce2\u5668\uff0c\u6216 6 dB\/oct \u7684\u5e26\u901a\u6ee4\u6ce2\u5668\u3002\u6ee4\u6ce2\u5668\u91cd\u7f6e\u6309\u94ae\u53ef\u4ee5\u7f29\u77ed\u4eea\u5668\u5728\u4f7f\u7528\u957f\u65f6\u95f4\u5e38\u6570\u6ee4\u6ce2\u5668\u65f6\u7684\u8fc7\u8f7d\u6062\u590d\u65f6\u95f4\u3002\u6ee4\u6ce2\u5668\u622a\u6b62\u9891\u7387\u53ef\u4ee5\u5728 0.03 Hz \u5230 1 MHz \u4e4b\u95f4\u7684 1-3-10 \u5e8f\u5217\u4e2d\u8bbe\u7f6e\u3002<\/p>\n<p><strong>\u7535\u6c60\u64cd\u4f5c<\/strong><\/p>\n<p>\u4e09\u4e2a\u5185\u90e8\u53ef\u5145\u7535\u94c5\u9178\u7535\u6c60\u63d0\u4f9b\u9ad8\u8fbe 15 \u5c0f\u65f6\u7684\u7535\u6c60\u4f9b\u7535\u64cd\u4f5c\u3002\u5185\u90e8\u7535\u6c60\u5145\u7535\u5668\u5728\u5355\u5143\u8fde\u63a5\u5230\u7535\u6e90\u65f6\u81ea\u52a8\u5145\u7535\uff0c\u5145\u7535\u5668\u611f\u77e5\u7535\u6c60\u72b6\u6001\u5e76\u76f8\u5e94\u8c03\u6574\u5145\u7535\u901f\u5ea6\u3002\u4e24\u4e2a\u540e\u9762\u677f LED \u6307\u793a\u7535\u6c60\u7684\u5145\u7535\u72b6\u6001\u3002\u5f53\u7535\u6c60\u7535\u91cf\u8017\u5c3d\u65f6\uff0c\u5b83\u4eec\u4f1a\u81ea\u52a8\u4ece\u653e\u5927\u5668\u7535\u8def\u4e2d\u65ad\u5f00\uff0c\u4ee5\u907f\u514d\u7535\u6c60\u635f\u574f\u3002<\/p>\n<p><strong>\u65e0\u6570\u5b57\u566a\u58f0<\/strong><\/p>\n<p>SR560 \u7684\u5fae\u5904\u7406\u5668\u201c\u4f11\u7720\u201d\u72b6\u6001\uff0c\u9664\u975e\u5728\u66f4\u6539\u4eea\u5668\u8bbe\u7f6e\u7684\u77ed\u6682\u95f4\u9694\u5185\u3002\u8fd9\u786e\u4fdd\u4e86\u6ca1\u6709\u6570\u5b57\u566a\u58f0\u6c61\u67d3\u4f4e\u7535\u5e73\u6a21\u62df\u4fe1\u53f7\u3002<\/p>\n<p><strong>RS-232 \u63a5\u53e3<\/strong><\/p>\n<p>RS-232 \u63a5\u53e3\u5141\u8bb8\u4ee5 9600 \u6ce2\u7279\u7387\u8fdb\u884c\u76d1\u542c\u901a\u4fe1\u3002\u6700\u591a\u53ef\u4ee5\u4ece\u4e00\u53f0\u8ba1\u7b97\u673a\u63a7\u5236\u56db\u53f0 SR560\uff0c\u6bcf\u53f0 SR560 \u5206\u914d\u4e00\u4e2a\u552f\u4e00\u5730\u5740\u3002\u901a\u8fc7\u201c\u76d1\u542c\u201d\u547d\u4ee4\u6307\u5b9a\u54ea\u4e2a SR560 \u54cd\u5e94 RS-232 \u7ebf\u8def\u4e0a\u7684\u547d\u4ee4\u3002\u9664\u7535\u6e90\u5916\uff0c\u4eea\u5668\u7684\u6240\u6709\u529f\u80fd\u5747\u53ef\u901a\u8fc7 RS-232 \u63a5\u53e3\u8fdb\u884c\u8bbe\u7f6e\u3002RS-232 \u63a5\u53e3\u7535\u5b50\u7ec4\u4ef6\u4e0e\u653e\u5927\u5668\u7535\u8def\u9694\u79bb\uff0c\u4ee5\u63d0\u4f9b\u6700\u5927\u566a\u58f0\u514d\u75ab\u6027\u3002<\/p>\n<p><strong>SR560 \u89c4\u683c<\/strong><\/p>\n<ul>\n<li><strong>\u8f93\u5165<\/strong>\n<ul>\n<li>\u8f93\u5165\u7c7b\u578b: AC \u6216 DC \u8026\u5408\uff0c\u5355\u7aef\u6216\u5dee\u5206<\/li>\n<li>\u8f93\u5165\u963b\u6297: 100 M\u03a9 + 25 pF<\/li>\n<li>\u6700\u5927\u8f93\u5165: 3 Vpp<\/li>\n<li>\u5171\u6a21\u6291\u5236\u6bd4 (CMRR): DC \u81f3 1 kHz \u65f6 100 dB\uff081 kHz \u65f6 100 mVrms \u5171\u6a21\u8f93\u5165\uff0c\u589e\u76ca=100\uff0c\u4f4e\u566a\u58f0\u6a21\u5f0f\u3002\u4ece 1 kHz \u5230 1 MHz \u4e0b\u964d 6 dB\/oct\uff09<\/li>\n<li>\u566a\u58f0: 1 kHz \u65f6 4 nV\/\u221aHz<\/li>\n<li>\u589e\u76ca: 1 \u5230 50,000\uff0c\u91c7\u7528 1-2-5 \u5e8f\u5217\u3002\u589e\u76ca\u7a33\u5b9a\u6027: 200 ppm\/\u00b0C<\/li>\n<li>\u5e26\u5bbd: -3 dB \u5728 1.2 MHz\uff08\u5178\u578b\uff09<\/li>\n<li>\u5e73\u5766\u5ea6: \u5728 300 kHz \u5185 \u00b10.3 dB\uff08\u589e\u76ca\u9ad8\u8fbe 1000\uff09<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u6ee4\u6ce2\u5668<\/strong>\n<ul>\n<li>\u4fe1\u53f7\u6ee4\u6ce2\u5668: 2 \u4e2a\u53ef\u914d\u7f6e\u7684\uff08\u4f4e\u901a\u6216\u9ad8\u901a\uff096 dB\/oct \u6ee4\u6ce2\u5668\u3002-3 dB \u70b9\u53ef\u4ee5\u5728 0.03 Hz \u5230 1 MHz \u4e4b\u95f4\u7684 1-3-10 \u5e8f\u5217\u4e2d\u8bbe\u7f6e\u3002<\/li>\n<li>\u589e\u76ca\u5206\u914d: \u9ad8\u52a8\u6001\u50a8\u5907 \u2014 \u589e\u76ca\u5728\u4fe1\u53f7\u6ee4\u6ce2\u5668\u4e4b\u540e\u589e\u52a0\u4ee5\u9632\u6b62\u8fc7\u8f7d\u3002\u4f4e\u566a\u58f0 \u2014 \u589e\u76ca\u5728\u6ee4\u6ce2\u5668\u4e4b\u524d\u589e\u52a0\u4ee5\u63d0\u9ad8\u566a\u58f0\u7279\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u8f93\u51fa<\/strong>\n<ul>\n<li>\u6700\u5927\u8f93\u51fa: 10 Vpp \u5230 50 \u03a9 \u548c 600 \u03a9<\/li>\n<li>\u6ee4\u6ce2\u5668\u91cd\u7f6e: \u957f\u65f6\u95f4\u5e38\u6570\u6ee4\u6ce2\u5668\u53ef\u901a\u8fc7\u524d\u9762\u677f\u6309\u94ae\u91cd\u7f6e<\/li>\n<li>DC \u6f02\u79fb: 5 \u00b5V\/\u00b0C \u53c2\u8003\u8f93\u5165\uff08DC \u8026\u5408\uff09<\/li>\n<li>\u5931\u771f: 1 kHz \u65f6 0.01%<\/li>\n<li>\u540e\u9762\u677f: \u00b112 VDC @ 200 mA\uff0c\u53c2\u8003\u653e\u5927\u5668\u5730<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u4e00\u822c<\/strong>\n<ul>\n<li>\u5916\u90e8\u89e6\u53d1: TTL \u8f93\u5165\u5c06\u589e\u76ca\u8bbe\u7f6e\u4e3a\u96f6<\/li>\n<li>\u63a5\u53e3: RS-232\uff0c9600 \u6ce2\u7279\uff0c\u63a5\u6536\u4ec5<\/li>\n<li>\u7535\u6e90: 100\/120\/220\/240 VAC\uff0c\u5145\u7535\u65f6 6 \u74e6\u7279\uff0c\u5145\u7535\u65f6 30 \u74e6\u7279\u3002\u5185\u90e8\u7535\u6c60\u63d0\u4f9b 15 \u5c0f\u65f6\u7684\u64cd\u4f5c\u65f6\u95f4\u3002\u8fde\u63a5\u7535\u6e90\u65f6\u7535\u6c60\u4f1a\u5145\u7535\u3002<\/li>\n<li>\u5c3a\u5bf8: 8.3&#8243; \u00d7 3.5&#8243; \u00d7 13.0&#8243;\uff08\u5bbd \u00d7 \u9ad8 \u00d7 \u957f\uff09<\/li>\n<li>\u91cd\u91cf: 15 \u78c5\uff08\u5b89\u88c5\u7535\u6c60\uff09<\/li>\n<li>\u4fdd\u4fee: \u4e00\u5e74\u96f6\u4ef6\u548c\u5de5\u65f6\u4fdd\u4fee\uff0c\u9488\u5bf9\u6750\u6599\u548c\u5de5\u827a\u7f3a\u9677<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mt-1 flex gap-3 empty:hidden -ml-2\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/article>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_178\" aria-describedby=\"caption-attachment-178\" style=\"width: 1266px\" class=\"wp-caption alignnone\"><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-178 size-full\" src=\"https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32.png\" alt=\"SRS,Stanford Research Systems,SR560,\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668\" width=\"1266\" height=\"835\" srcset=\"https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32.png 1266w, https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32-300x198.png 300w, https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32-1024x675.png 1024w, https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32-768x507.png 768w, https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32-500x330.png 500w, https:\/\/www.bihec.com\/think-srs\/wp-content\/uploads\/sites\/1216\/2024\/09\/img_66dc1d76dbe32-800x528.png 800w\" sizes=\"(max-width: 1266px) 100vw, 1266px\" \/><figcaption id=\"caption-attachment-178\" class=\"wp-caption-text\">SRS,Stanford Research Systems,SR560,\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.bihec.com\/think-srs\/SR560\/\">https:\/\/www.bihec.com\/think-srs\/SR560\/<\/a><\/p>\n<br><div class=\"tagcloud\"><a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/sr560\/\" class=\"tag-cloud-link tag-link-0 tag-link-position-1\" style=\"font-size: 8pt;\" aria-label=\"SR560 (1\u4e2a\u9879\u76ee)\">SR560<\/a>\n<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/srs\/\" class=\"tag-cloud-link tag-link-1 tag-link-position-2\" style=\"font-size: 22pt;\" aria-label=\"SRS (105\u4e2a\u9879\u76ee)\">SRS<\/a>\n<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/stanford-research-systems\/\" class=\"tag-cloud-link tag-link-2 tag-link-position-3\" style=\"font-size: 22pt;\" aria-label=\"Stanford Research Systems (105\u4e2a\u9879\u76ee)\">Stanford Research Systems<\/a>\n<a href=\"https:\/\/www.bihec.com\/think-srs\/tag\/%e4%bd%8e%e5%99%aa%e5%a3%b0%e7%94%b5%e5%8e%8b%e5%89%8d%e7%bd%ae%e6%94%be%e5%a4%a7%e5%99%a8\/\" class=\"tag-cloud-link tag-link-3 tag-link-position-4\" style=\"font-size: 8pt;\" aria-label=\"\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668 (1\u4e2a\u9879\u76ee)\">\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668<\/a><\/div>","protected":false},"excerpt":{"rendered":"<p>SRS,Stanford Research Systems,SR560,\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668 SR560 \u2014 \u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668 \u6982\u8ff0 SR560 \u662f\u4e00\u6b3e\u9ad8\u6027\u80fd\u3001\u4f4e\u566a\u58f0\u7684\u524d\u7f6e\u653e\u5927 <\/p>\n","protected":false},"author":27,"featured_media":178,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":[]},"categories":[37],"tags":[38,4,5,39],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SRS,Stanford Research Systems,SR560,\u4f4e\u566a\u58f0\u7535\u538b\u524d\u7f6e\u653e\u5927\u5668<\/title>\n<meta name=\"description\" content=\"SR560 \u5177\u6709 4 nV\/\u221aHz \u7684\u8f93\u5165\u566a\u58f0\u548c 100 M\u03a9 \u7684\u8f93\u5165\u963b\u6297\u3002\u8f93\u5165\u5b8c\u5168\u6d6e\u52a8\uff08BNC \u5c4f\u853d\u4e0d\u63a5\u5730\uff09\u3002\u524d\u9762\u677f\u4e0a\u53ef\u4ee5\u7528\u5c0f\u87ba\u4e1d\u5200\u8c03\u6574\u8f93\u5165\u504f\u7f6e\u7684\u96f6\u70b9\u3002\u9664\u4e86\u4fe1\u53f7\u8f93\u5165\u5916\uff0c\u540e\u9762\u677f\u8fd8\u6709 TTL 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