When the galvanometer reads zero the circuit is in the null - balance position.当检流计的读数为零时,电路处于零平衡位置.If a sinusoidal current is sent through a movingcoil galvanometer, the meter reads zero.如果将一正弦电流通入动圈式电流计, 那么这电流计的读数为零.Th...
The definition of operator homeomorphism mapping , together with its characterizations, is given in this paper.在算子开集理论中给出了算子同胚映射的概念, 得到了算子同胚映射的若干性质....
The guards were removing a section of fencing to let it through.警卫在拆除一段围栏好让它通过。The factory is surrounded by electric fencing.工厂有电网围着。I did a bit of fencing while I was at college.我在大学时偶尔玩玩击剑....