【简答题】激光的最初的中文名叫做“镭射”、“莱塞”,是它的英文名称LASER的音译,是取自英文Light Amplification by Stimulated Emission of Radiation的各单词头一个字母组成的缩写词。意思是“受激发射的光扩大”。19年按照我国著名科学家( )建议将“光受激发射”改称“激光”。
【简答题】Task 2. Read and translate the limited items in railway transportation.(读并翻译铁路运输中的限量运输物品) Regulation on the amount of the followings that can be brought on board. Less than 5 gas lighters. 2. Less tha...