管: pipe; tube端: end; extremity开口: open one's mouth; start to t ...末端开口的: open-ended桶端开口: barrel end opening一端开口的管: half-open tube顶端开口的心导管: cardiac catheter with open tip龟裂端开口位移: crack tiopening displacement ctod; ctod两端开口坞建造法: canal dock building system末端开口式接受腔: open-end socket双端开口爪形扳手: double ended open jawed spanner一端开口的管子: half-open tube管端: pipe end; pipe shoe; spigot(两端开口的)一种印度方头雪茄烟: trichinopoli双端开口金属真空太阳能集热管: tmv开口: 1.(开口说话) open one's mouth; start to talk; begin to speak 不开口 hold one's tongue; 难以开口 find it difficult to bring the matter up2.(开刃) put the first edge on a knife; sharpen the edge of a new blade3.opening aperture; [纺织] shedding; aperture; placketing; orifice; fent; hiascent; 开口订单 open order; 开口订货单 open indent; 开口合同 open-end contract; 开口机 tapping machine; 开口器 mouth gag; 开口销 linchpin; lynchpin; split cotter; split pin; spring cotter; forelock; [设计] cotter pin; 开口信件 unsealed letter管端口: end of pipe管端块: tube end piece多端开关: multipole switch空端开关: dead-end switch末端开间: end bay前端开发: front end development三端开关: three-terminal switch; trisistor三极端开关: triode type switch双端开关: two-terminal switch