The Auxiliary Teaching Picture Database System of Introduction of Earth Science 地球科学概论辅助教学图片库系统的开发
This paper describes a new hybrid neutral point treatment for 3~ 66 kV auxiliary power network, which integrates the selective protection for switching off earth short circuit and two sets of AC metal-oxide surge arresters without gaps at different protection level. 介绍了新型混合式3~66kV自备电网中性点接地方式。这种中性点接地方式加上了接地短路切除动作的选择保护,以及两组不同保护水平的交流无间隙金属氧化物避雷器。
Application of auxiliary oxygen-absorbing electrode& In hermetically sealed Ni-Cd battery for low earth orbit satellite 吸氧辅助电极的应用&用于低轨道卫星全密封镉镍蓄电池
The auxiliary coil has 16 taps and can compensate the earth fault current within a precision of 1A. 从消弧线圈具有16档细调功能,故障时投入可以精确补偿系统对地电容电流,补偿精度达到1安培以内。
The influences of the type and content of main salt, the content of auxiliary salt, rare earth, buffer, phosphorous acid and complexing agent on deposit composition and deposition rate were discussed. 讨论了主盐类型及含量,辅盐、稀土元素、缓冲剂、亚磷酸以及络合剂含量对镀层组成及沉积速度的影响。
The basic principles and the design method of the auxiliary part of the hybrid excitation rare earth permanent magnet synchronous generator are discussed. 探讨了该发电机辅助电励磁部分的基本结构和设计方法。
Environmentally Digestible Plastic Auxiliary Agent& the Research and Application of the Rare Earth Photosensitizer 可环境消纳塑料助剂&稀土类光敏剂的研究与应用