spirane structure

• 螺环结构

spirane structure的用法和样例：

例句

1. Recently the development of a new-type organophosphorous pesticide with ternary asymmetric structure and heterocycle structure has been very active.
   带有三元不对称结构和杂环结构的新型有机磷杀虫剂的开发，近年来一直比较活跃。
2. The breech lock closure structure and the large flange connection structure of high pressure heat exchangers have been compared.
   就高压换热器中螺纹锁紧环结构及大法兰连接结构作了比较。