Results 61 to 70 of about 10,271 (110)

SF₆灭弧室气流动态特性的数值分析

Gaoya dianqi, 1986
根据热力学理沦并考虑到电弧的作用,运用数值运算方法对灭弧室气流的解析方程进行了计算。结果显示,气流的改变主要受电弧瞬时功率控制,最大流量不是发生于压力峰值时刻而是出现在电流过零时。在分析电弧对气流影响时,必须同时考虑到弧柱对喉道的障碍作用和电弧对气流的加热效应。
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苏联直流成套电气设备研制状况

Dianci bileiqi, 1983
苏联电气工业从1979年开始供应12相组功率355兆瓦直流变流站用的成套电气设备,从1983年开始供应12相组功率1500兆瓦直流输电线路用的成套电气设备 ...
张国钧
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SF₆/CF₄混合气体中聚四氟乙烯绝缘表面直流闪络特性

Gaoya dianqi, 2018
文中对电极间距为5 mm的指形电极下SF6/CF4混合气体中聚四氟乙烯绝缘表面直流闪络特性展开研究,分别测量了当SF6/CF4混合气体中SF6混合比为0%100%、压强为0.10.4 MPa时绝缘试样的直流沿面闪络电压,研究压强、混合比、电压极性等因素对绝缘试样直流沿面闪络特性的影响。实验结果表明:混合气体中SF6混合比一定时,在0.10.4 MPa气压范围内,绝缘试样的直流闪络电压随气压升高而呈线性增加;0.3 MPa的20%SF6/80%CF4气体中绝缘试样的负极性直流闪络电压为52.34 kV ...
杨明智, 林莘, 温苗, 李晓龙
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[Determination of atmospheric intermediate volatility organic compounds with thermal desorption-flow modulator comprehensive two-dimensional gas chromatography- time-of-flight mass spectrometry]. [PDF]

Se Pu
Wang R, Li YJ, Wang JH, Ma CW, Jiang JK.
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[Association between serum uric acid and airflow obstruction based on the health-checkup population]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhou Q, Yang Q, Shi S, Li P, Sun F.
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[Study on simulated airflow dynamics of children with obstructive sleep apnea treated by different surgical methods]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Guo W, Lei Q.
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[Evaluation of the accuracy of three-dimensional data acquisition from liquid- interference surfaces assisted by a scanner head with a compressed airflow system]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Xu X, Zhao J, Tian S, Liu Z, Zhao X, Zhao X, Jiang T, Chen X, Ma C, Sun Y.   +9 more
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[Preparation of fluorescent carbon dots by flow-assisted melt polymerization for tetracycline detection in medical wastewater]. [PDF]

Se Pu
Liu ZW, Ni LX, Chi J, Qin YX, Shi ZJ, Wang Y, Wei HZ, Feng L, Sun CL.   +8 more
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[Digital Drainage Systems in Postoperative Chest Tube Management
after Pulmonary Resection: Current Status and Future Perspectives]. [PDF]

Zhongguo Fei Ai Za Zhi
Wang Y, Shen H, Kang J, Sun M, Cui Y, Wang P.   +5 more
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[Clinical characteristics and influencing factors of routine pulmonary ventilation function in children with allergic rhinitis induced by house dust mites]. [PDF]

Zhongguo Dang Dai Er Ke Za Zhi
Zhuang SJ, Fan TT, Lai RL, Ruan XY, Huang SM, Gao ZH, Zhou Q, Yan WJ, Liu CY, Lu ZW, Ma ZY, Huang MF, Bao YM.   +12 more
europepmc   +1 more source