open vat洗滤器
openadj.开着的;开放的;公开的v.打开;张开;展开;摊开;开始(某事物);开张;营业;以…开头;宣布启用n.户外;公开
open tube vascular system开放管道式血管系统
open a railway to traffic使铁路通车
open cast mine side slope露天矿边坡
open source routing suite开源路由包
open-end import licence公开限期进口许可证
open circuited delay line开路延迟线
open-circuit transition开路换接过程