{"id":12419,"date":"2016-05-10T19:00:12","date_gmt":"2016-05-10T11:00:12","guid":{"rendered":"\/\/m.iemloyee.com\/?p=12419"},"modified":"2016-05-10T16:39:17","modified_gmt":"2016-05-10T08:39:17","slug":"physical-review-letters-%e6%8f%90%e9%ab%98%e5%ba%9f%e7%89%a9%e5%9b%9e%e6%94%b6%e7%8e%87%e7%9a%84%e6%96%b0%e7%a7%91%e6%8a%80","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=12419","title":{"rendered":"Physical Review Letters–\u63d0\u9ad8\u5e9f\u7269\u56de\u6536\u7387\u7684\u65b0\u79d1\u6280"},"content":{"rendered":"
\u8fd1\u671f\uff0c\u6765\u81ea\u65e5\u672c\u5188\u5c71\u5927\u5b66\u548c\u5927\u962a\u5927\u5b66\u7684\u7814\u7a76\u5b66\u8005\u4eec\uff0c\u6d4b\u5b9a\u4e86\u7c89\u672b\u5728\u7ecf\u7a7a\u6c14\u55b7\u5c04\u540e\u5f62\u6210\u7403\u4f53\u6c89\u79ef\u5728\u56fa\u5b9a\u7c89\u5e8a\u4e0a\u7684\u8868\u9762\u72b6\u6001\uff0c\u53d1\u73b0\u5728\u7a7a\u6c14\u4e0d\u5f71\u54cd\u5df2\u6c89\u79ef\u7c89\u672b\u7684\u60c5\u51b5\u4e0b\uff0c\u7c89\u5e8a\u8868\u9762\u5b58\u5728\u5f02\u5e38\u7684\u7403\u4f53\u6c89\u79ef\u73b0\u8c61\u3002<\/p>\n
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\u53e6\u5916\uff0c\u6539\u53d8\u7a7a\u6c14\u55b7\u5c04\u901f\u7387\u548c\u7403\u4f53\/\u7c89\u672b\u7684\u6bd4\u4f8b\u8fdb\u884c\u5b9e\u9a8c\uff0c\u5c06\u80fd\u591f\u4e3a\u8fdb\u4e00\u6b65\u7814\u7a76\u654f\u611f\u5927\u9897\u7c92\u7684\u5206\u79bb\u673a\u5236\u63d0\u4f9b\u57fa\u7840\u3002<\/p>\n
\u56fe\u6587\u5bfc\u8bfb\uff1a<\/strong><\/p>\n \u7403\u4f53\u5bc6\u5ea6\u53ca\u76f8\u5e94\u7684\u6c89\u79ef\u6df1\u5ea6\uff1a\u6c89\u79ef\u6df1\u5ea6\u7531\u7403\u4f53\u7684\u91cd\u91cf\u51b3\u5b9a\uff0c\u8f83\u8f7b\u7684\u7403\u4f53\u6bd4\u91cd\u7684\u7403\u4f53\u6c89\u79ef\u5f97\u66f4\u6df1\u3002<\/span><\/span><\/p>\n \u56fe1\uff1a\u5de6\u56fe\uff0c\u964d\u843d\u538b\u5f3a\u25b3P\uff0c\u7a7a\u6c14\u55b7\u5c04\u7684\u901f\u7387uo<\/sub>\uff0c\u6700\u4f4e\u6d41\u4f53\u5316\u901f\u7387umf<\/sub>\uff0c\u56fa\u5b9a\u7c89\u5e8a\u533a\u57df\u7684\u538b\u5f3a\u5148\u5448\u7ebf\u6027\u53d8\u5316\uff0c\u6d41\u4f53\u5316\u540e\u538b\u5f3a\u57fa\u672c\u4fdd\u6301\u4e0d\u53d8\u3002\u8be5\u5b9e\u9a8c\u5728uo<\/sub>\/umf<\/sub>\u22641\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u3002\u53f3\u56fe\uff0c\u6d4b\u91cf\u7403\u4f53\u6c89\u79ef\u7684\u88c5\u7f6e\u7b80\u56fe\uff1a\u7403\u4f53\u76f4\u5f84Dsphere<\/sub>=30mm\uff0c\u5706\u67f1\u4f53\u5bb9\u5668\u76f4\u5f84150mm\uff0c\u5bb9\u5668\u5185\u88c5\u6709\u76f4\u5f840.21-0.25\u7684\u7c89\u672b\uff0c\u9ad8\u5ea6300mm\u6216\u8005150mm\uff0c\u7c89\u5e8a\u5bc6\u5ea6\u03c1bed<\/sub>=1.53g\/cm3<\/sup>\u3002<\/p>\n \u56fe2\uff1a(a)\u6a2a\u5750\u6807\uff1a\u65f6\u95f4\u7684\u5bf9\u6570\uff0c\u7eb5\u5750\u6807\uff1a\u7c89\u672b\u9ad8\u5ea6\/\u7403\u4f53\u76f4\u5f84\u3002\u4e0d\u540c\u7684\u201c\u7403\u4f53\u5bc6\u5ea6\/\u7c89\u672b\u5bc6\u5ea6\u201c\u7684\u56fe\u50cf\uff0c\u4e0d\u540c\u7684\u7403\u4f53\u5bc6\u5ea6\u4e0b\u90fd\u6709u0<\/sub>\/umf<\/sub>=0.95\u3002\u589e\u8865\u8d44\u6599[18]\u4e2d\u4e3a\u76f8\u5bf9\u6c89\u79ef\u7684\u5f62\u8c61\u5316\u89c6\u9891\u3002(b)\u6a2a\u7eb5\u5750\u6807\u5982a\u56fe\u4e2d\u6240\u793a\uff0c0.85\u2264\u03c1sphere<\/sub>\/\u03c1bed<\/sub>\u22641.31\uff0c(c)\u6a2a\u5750\u6807\uff1a\u7403\u4f53\u5bc6\u5ea6\/\u7c89\u672b\u5bc6\u5ea6\u3002\u7eb5\u5750\u6807\uff1a\u6700\u7ec8\u6df1\u5ea6hfinal<\/sub>\/\u7403\u4f53\u76f4\u5f84\u3002\u5bb9\u5668\u5e95\u90e8300mm\u5904\u5bf9\u5e94\u7684h\/Dsphere<\/sub>=10\u3002h\u603b\u4f53\u5448\u4e0b\u964d\u8d8b\u52bf\u3002<\/p>\n <\/p>\n \u56fe3\uff1a(a)\u6a2a\u5750\u6807\uff1a\u7403\u4f53\u5bc6\u5ea6\/\u7c89\u672b\u5bc6\u5ea6\uff0c\u7eb5\u5750\u6807\uff1a\u6700\u7ec8\u6df1\u5ea6\/\u7c89\u672b\u51f9\u9677\u6df1\u5ea6\u3002\u4e0d\u540cuo<\/sub>\/umf<\/sub>\u7684\u56fe\u50cf\uff0cuo<\/sub>\/umf<\/sub>\u59cb\u7ec8\u5c0f\u4e8e\u7b49\u4e8e1\u3002(b)\u7403\u4f53\u5bc6\u5ea6\/\u7c89\u672b\u5bc6\u5ea6=0.98\u65f6\uff0c\u6a2a\u5750\u6807\uff1auo<\/sub>\/umf<\/sub>\uff0c\u5de6\u7eb5\u5750\u6807\uff1a\u6700\u7ec8\u6df1\u5ea6\/\u7c89\u672b\u51f9\u9677\u6df1\u5ea6\uff0c\u53f3\u7eb5\u5750\u6807\uff1a\u964d\u843d\u538b\u5f3a\u25b3P\u3002\u7c89\u5e8a\u6df1\u5ea6150mm\u3002<\/p>\n \u56fe4\uff1auo<\/sub>\/umf<\/sub>=0.95\u65f6\uff0c\u4e0d\u540c\u7684\u7403\u4f53\u5bc6\u5ea6\/\u7c89\u5e8a\u5bc6\u5ea6\u4e0b\uff0c\u7c89\u5e8a\u8868\u9762\u7684\u7403\u4f53\u56fe\u50cf\u3002<\/p>\n \u539f\u6587\u53c2\u8003\u94fe\u63a5\uff1aAnomalous sinking of spheres in apparently fixed powder beds discovered<\/a><\/p>\n<\/p>\n
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