孔隙: small opening; hole; pore; a ...开口: open one's mouth; start to t ...半径: radius孔隙入口半径: pore entrance radius; pore entry radius辊隙开口度: roll gap opening凹口半径: radius of notch出口半径: auslaufradius extended radius模口半径: die radius坡口半径: grooveradius; root radius缺口半径: radius of notch入口半径: entry radius齿根半径 坡口半径 牙底半径 缺口半径: rootradius孔隙半径: pore body radius; pore radius角隙开关: horn gap switch; horn-gap switch微间隙开关: microgaswitch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孔隙: small opening; hole; [冶金学] pore; aperture gap; pore space; ventage; void半径: [数学] radius; [天文学] semidiameter◇半径规 [机械工程] radius gauge; 半径铣刀 [机械工程] radius cutter港口半岛: port peninsula缝隙开裂速度: cracking speed喷口半收敛角: beta angle大屿山港口半岛: lautau port peninsula孔隙比;孔隙率: void ratio孔隙度, 孔隙率: amount of porosity孔隙度;孔隙率: porosity