Dianci bileiqi, 1990 一、前言线路绝缘子、电站支柱绝缘子、瓷套和套管（以下简称绝缘子）质量的优劣,在运行中的维护如何,直接关系到电力系统的安全,影响到各用电户的供电可靠性。例如我局毛集35kV变电站1981年5月9日,高压室内10kV汇流排A相户内支柱绝缘子（ZA—10型）发生污闪,10kV母线单相接地 ...
陈军
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[Determination of polychlorinated naphthalenes in ambient air by isotope dilution gas chromatography-triple quadrupole mass spectrometry]. [PDF]
Se Pu, 2022 Liu H, Jin J, Guo C, Chen J, Hu C.
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[Determination of 17 bisphenol compounds in human urine by solid supported liquid-liquid extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuJin Y +6 more
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[Efficacy analysis of autologous facet joint bone block in lumbar interbody fusion of osteoporosis patients]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2023 Wang DW +8 more
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Gaoya dianqi根据变电站瓷支柱绝缘子带电检测缺陷的实际需求，以220 kV瓷支柱绝缘子为研究对象，深入研究了裂纹长度、裂纹形状和激振位置对瓷支柱绝缘子振动检测的影响。首先阐述了瓷支柱绝缘子内部缺陷振动检测的基本原理，然后建立瓷支柱绝缘子有限元数值分析模型，利用脉冲信号模拟锤击进行瞬态分析，并搭建实验平台进行测试分析。仿真和实验结果表明：裂纹长度越大，在功率谱图上表现为正常频率区间内的峰值降低，故障区间内的峰值所对应固有频率左移，激振点远离裂纹侧时波峰的加速度响应谱值出现小幅度的减小 ...
董国振 +5 more
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[Repair and reconstruction of facial organ injuries: a perfect fit of structure and function]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiSong BQ, Pei JM.
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Nan Fang Yi Ke Da Xue Xue Bao, 2023 Zou Q, Wang M, Lu Z, Zhao Y, Feng Q.
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Beijing Da Xue Xue Bao Yi Xue BanHou W, Song S, Shi Z, Liu L, Jin M.
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Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiGu Y, Chen YZ, Wang SY, Song HY, Bai N.
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