Results 71 to 80 of about 17,327 (130)
Gongye shui chuli, 1999 应用电化学理论对纯水级脱盐水的pH 值与电导率的关系进行研究。对于电导率小于0-2 μS/cm 的脱盐水，其pH 值必然在6-3 ～7-9 范围内。对纯水级脱盐水而言，pH 值由7 每降低1,则电导率就大约增大到原来的10倍。手动取样分析脱盐水的pH值，其误差主要来自空气的影响。
王晓伟
doaj
Gaoya dianqi, 2020 GIS设备长期运行会导致盆式绝缘子材料老化,表面电阻率是表征绝缘子老化状态的一个重要参量。文中提出了一种测试GIS盆式绝缘子表面电阻率的方法,设计了一套盆式绝缘子导体临近区域曲面表面电阻率的测试装置。该装置包含两个圆环形电极,分别作为被保护电极和不保护电极,盆式绝缘子的中心导体作为保护电极,三者构成三电极结构。两个圆环形电极间距为2 mm,基于盆式绝缘子的设计尺寸,计算两电极间绝缘沿面的弧长。根据外施电压和稳态电流,最终得到绝缘子表面电阻率。通过126 kV新旧盆式绝缘子表面电阻率测试 ...
王增彬 +5 more
doaj
[Research progress on the acquisition technology of magnetocardiography]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiKang B +5 more
europepmc +1 more source
[Clinical diagnosis and condition monitoring of auditory neuropathy based on vestibular evoked myogenic potentials]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiWei H, Xu C.
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[Revolution teaching practice in sample pretreatment supported by large-scale instrument： a case study of magnetic covalent organic framework enriching organic ultraviolet filters in seawater]. [PDF]
Se PuLi S +5 more
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[Effect of composite graphene-protein hydrogels on neural regeneration after spinal cord injury in rats]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang Z, Fan Z, Wang X, Zhu Z.
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[Diagnostic accuracy of tandem mass spectrometry combined with artificial intelligence for neonatal methylmalonic acidemia and associated factors]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiYan PY, Yu Y, Jiang S, Li HW, Wu HL.
europepmc +1 more source