开口: open one's mouth; start to t ...管柱: tubular column多孔开口管柱: porous layer open tubular column多孔层开口管柱: porous layer open tubular column plot涂载体的开口管柱: support coated open tubular column涂载体开口管柱: support-coated open tubular column载体涂层开口管柱: su ort coated open tubular column,scot; support coated open tubular column scot; support coated open tubular column,scot开口管: open tube; open-end tube大孔径多孔层气相色谱开口管柱: large diameter porous layer opentubular gc column开口管,空心管: open tube开口管筒: open joint tube开口管桩: open-end-pipe pile开口的管柱: open pipe string开口管道系统: open canalicular system开口管子虎钳: open side pipe vise开口毛细管柱: open-tubular capillary column口管: aperture tube; buccal funnel; oral tube管柱: tubular column◇管柱基础 tube caisson foundations; 管柱桩 hollow tube pile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承口管: socket pipe出口管: exit pipe; exit tube; outlet duct; outlet pipe; outlet tube接口管: mouth piece; mouthpiece进口管: induction pipe; inlet pipe; inlet tube扩口管: flared tube喷口管: jet pipe