皇室观察员玛丽·海斯说：“看来女王接下来的日子不太好过。”Royal-watcher Mary Hayes said: "It looks like it is going to be an unhappy time for the Queen."你肯定不会相信海斯的说法吧？You're surely not giving any credence to this story of Hythe's?有一天,她发现他正...
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....