Results 121 to 130 of about 330 (164)
Dianci bileiqi本研究选用直径24 mm的芯棒加工20 个符合压缩弹性模量测试用的芯棒样品，参照标准GB/T 1448-2005，重点讨论涉及芯棒压缩弹性模量的测试方法和装置。试验结果表明试验机与千分表联合测试方法下，在弹性变形范围内分五级压缩负荷加载，测得的压缩弹性模量值存在一定的分散性，且波动较大，说明这种方法有一定的局限性和缺陷性，多次测量得出的压缩弹性模量值准确度不高；试验机与光栅尺及配套工装联合测试方法下，测得压缩弹性模量值准确度高，分散性小，说明这种试验方法具有很高的稳定性和再现性；测试压缩弹性模量时 ...
刘于新 +7 more
doaj
[Advances in the endotypes of chronic rhinosinusitis]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2020 Jiang ZH, Meng J.
europepmc +1 more source
[Application research and development of objective examination of olfactory function]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2022 DU W, Chen F.
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Dianci bileiqi复合绝缘子酥朽断裂问题已经成为了阻碍其在电网进一步大范围使用的安全隐患。为了深入地研究酥朽复合绝缘子的劣化特征，通过对现场收集酥朽故障绝缘子试样的宏观分析、解剖分析、电镜扫描分析、傅里叶红外光谱分析、X射线光电子能谱分析等研究了酥朽复合绝缘子轴向老化特性。研究结果表明：酥朽断裂复合绝缘子在轴向上出现明显的区域差异性，断裂面离芯棒断口近的地方芯棒颜色为黑色、白色，离断口远的地方为深棕色、浅棕色，断裂面的反面也出现了相似的趋势，但是受损较轻；黑色区域树脂几乎完全降解，芯棒被严重破坏；白色物质是劣化后的硅橡胶；
刘泽辉 +5 more
doaj
[The guidelines for the diagnosis and treatment of Castleman disease in China (2025)]. [PDF]
Zhonghua Xue Ye Xue Za ZhiHematological Rare Disease Academic Group +3 more
europepmc +1 more source
[A lung sound classification model with a spatial and channel reconstruction convolutional module]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoYe N, Wu C, Jiang J.
europepmc +1 more source
[Progress in electric field assisted molecular imprinting technology]. [PDF]
Se PuWu JY, Huang XJ.
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[Impacting bone graft via surgical hip dislocation approach versus core decompression and bone graft for avascular necrosis of femoral head at ARCO stage Ⅲ]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2019 Sun H, Wei B.
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[Research advances of porous organic framework materials on enrichment and detection of mycotoxins]. [PDF]
Se Pu, 2023 Liu W, Xu ZW, Wang R, Zhao Y, Jia Q.
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