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 cir-cuit parameter开路参数open cast mine side slope露天矿边坡open concept of education开放式open source routing suite开源路由包open-channel hydraulics明槽水力学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