openess开放性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 grain structure粗晶组织open-loop tracking开环跟踪Open fracture of arm臂开放性骨折open-loop feedback开环open-trough urinal露天小便槽open-pit coal mine露天煤矿opened on to a patio朝向院子的open-closed subset开闭子集open interconnection敞开的互相连接open sb.'s eyes to