安装方便、快捷 、 不再需要磁开关.Fast installation, no magnet switch.介绍了在生产中励磁开关主触头烧蚀的解决方法.This paper presents solution of main contact ablation of a excitation switch in production....
翠鸟象箭似的由水面上擦过去, 小鱼大鱼都不见了, 水上只剩下浮萍.A kingfisher flashed across the water, the fish vanished, leaving the duckweed.我是垂钓者的浮萍.I was a fisherman's float.他的自信心已经崩溃,此时此刻,他觉得自己犹如一叶浮萍,不知飘向何方.His faith in himself had been shat...