A research is madethe properties of compound cement consisting of Alite - sulphoaluminate cement and Portland cement. 研究了阿利特 - 硫铝酸盐水泥与硅酸盐水泥复合所制备的水泥的性能.
一天早晨, 彼得的爸爸带着彼得去看金门桥.One morning, Peter's father took Peter to the Golden Gate bridge.可是,这条通道为什么叫做‘金门’ 呢 ?”But why is the opening called the Golden Gate?金门桥面一定该是金色的 吗 ?Will the Golden Gate Bridge ever be golden?...
He pleaded guilty to wilful dereliction of duty.他承认犯有玩忽职守罪。The previous owners had rescued the building from dereliction.这座建筑之前的业主将其从破败不堪的状况中挽救了出来。He was found guilty of gross dereliction of duty.他被判严重玩忽职守....
交换力的条件与同位旋完全无关.The condition of an exchange force has nothing to do with isospin.同位旋是矢量.Isospin is a vector quantity.由激光发射出的光线都是同位的.All rays leaving the laster are in phase....