开口: open one's mouth; start to t ...钻: drill; auger风动开口钻: air-operated taphole drill自动开口钻: automatic taphole drill弧口钻: gouge bit铁口钻: taphole drilling锥口钻: countersink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单刃锥口钻: sole cutting edge countersink多刃锥口钻: multiple cutting edge countersink; multiple-cutting edge countersink螺旋锥口钻: snail countersink木工锥口钻: countersink for wood working平口钻头: flat bit进口钻石识别制度: import identification regime for diamonds井口钻杆密封装置: tapping assembly密排深水口钻头: simulated insert bit半开口: half opening; semi-open包开口: bags mouths open别开口: zip your lips不开口: hold one's tongue迟开口: latch shedding单开口: single enttry entry黄开口: whorlleaf loosestrife herb with root; whorlleafloosestrifeherb净开口: clear opening开口,打开: open