失效: lose efficacy; lose effectiv ...炮: big gun; cannon; artillery p ...孔: hole; opening; aperture组: group有效炮孔线: effective gun bore line炮孔组爆破: round throw扇形炮孔组: fan holes; fan round; fan-pattren holes; fan-shaped round; ring holes; ring-fanned holes全断面炮孔组: full face round扇形炮孔组 放射状环形钻孔: ringholes无效炮: inefficient shot无效炮眼: blown-out hole有效炮眼: effective perforation失效: 1.(失去效力) lose efficacy; lose effectiveness; cease to be effective 这药已失效了。 the medicine no longer has any effect.2.(无效) (of a treaty, an agreement, etc.) be no longer in force; become invalid 条约的失效 voidance; voidness of treaties; 一张失效的支票 an invalid cheque; 自动失效 automatically cease to be in force; 这张证明已失效。 this certificate is invalid.; 失效保险 fail-safe; 失效检验 failure detection; 失效率 [物理学] failure rate; 失效提单 stale bill of lading; 失效支票 stale check; 失效准则 failure criteria舰炮孔: arming hole of naval gun炮孔排: row of holes瞎炮孔: misfired hole; miss shot hole; missed hole小炮孔: pop shot多孔组织: porous texture细孔组织: cell structure零件孔组件孔: component hole拒爆炮孔: mi ed hole; mi shot hole; misfire hole; miss shot hole; missed hole; unfired hole炮孔并联: parallel hole connection炮孔串联: series hole connection; seriesholeconnection炮孔定向器: burden gage; burden gauge炮孔排列法: drilling pattern