Cloisonne - enameled in black, 24 k gold electroplate ( back is all gold ).景泰蓝,搪瓷黑色, 24K金电镀 ( 背面是所有黄金 ).Thus, the aprotic non - aqueous solvents may be used to electroplate these materials.因此, 可考虑在极性非水溶剂中制备稀土及其合金膜.The ti...
如果冲量为零, 则动量不变.If the impulse is zero, there is no change in momentum.正周相动力冲量的定义可以用类似的式子表示.The positive phase dynamic impulse can be defined by a similar expression.用于碰撞过程的动量定理——冲量定理.The momentum theorem applied to an imp...
Two words are homophones if they are pronounced the same way but differ in meaning or spelling or both.发音相同拼写和意思不同的两个单词是同音异义词.One reason is to disambiguate homophones.原因之一是为了区别同音词....