在原子物理学的术语中, “ 壳层 ” 一词是经常使用的.The word'shell " is used extensively in the terminology of atomic physics.所有的碱金属都在闭合壳层之外有一单个S电子.All the alkali metals have a single s - electron outside a closed shell.原子核形变证实壳层结构.Nuclear...
This paper introduces the realization of catalyzing and cracking unIt'self - protect interlock in MACS system.文章介绍了催化裂化装置自保联锁在MACS系统中的实现.Crowds of French and British families plodded around in yellow plastic macs.成群...