open on通往, 开放
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-jointed pipe不嵌缝的接口管
open-hearth steel平炉钢,马丁钢
open-wire circuit明线线路,明线电路
Open -cast mining露天矿
open end correction开端校正
open outcry markets公开喊价市场
open-close motion开合运动
open-wove bandage疏布绷带
open circuit timing开路定时
open style teaching开放式教学