在恶劣的自然环境下,积污绝缘子随时可能发生闪络.Polluted insulators may flashover at any time under disadvantage weather conditions.实验表明表面电荷积聚使得绝缘子沿面闪络电压的降低竟然达到23.4%.For the insulator investigated the 50 % flashover voltage is reduced by 23.4 %...
这部记录片生动地再现了这场伟大的战役.This great battle was vividly recorded in the documentary film.这部记录片探讨这个问题有些深度.The documentary treated the question in some detail.他是这部记录片的解说员.He is the narrator of the documentary....
自封的公共道德的卫道士a self-appointed custodian of public morals她是个有道德的女性,人人都尊敬她.She was such a virtuous woman that everybody respected her.他把每个论题都变成了道德的讨论.He turns every subject into a moral discussion....
the topography of an area某地区的地形Landforms of topography, vegetation and climate are influential factors in formation of soils.地形或地形学 、 植被和气候都是对土壤形成有影响的因素.Two types of keratoconus after PKP have remarkable divergence of po...