英语词汇“maintenance of focus”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	maintenance of focus
释义	maintenance of focus 焦距保持
随便看	control valve bracket control valve breather control valve bush control valve cap control valve center piece control valve closure control valve dial plate control valve fast closure control valve flow performance control valve for fluids control valve for small flows control valve gear control valve gland control valve manual operating gear control valve of air passage control valve of copying device control valve of moderator level control valve operating lever control valve operating shaft control valve piston rod control valve plug control valve position switch control valves control valve spring control valve stability 乌龟摔在石板上，碰上硬的了乌龟撞石板，硬碰硬乌龟斗王八，各有各的法乌龟有肉在肚子里头乌龟有肉，在肚里乌龟爬门槛，就看此一跌乌龟笑鳖爬乌龟肚子朝天，动弹不得乌龟背铁板，实打实硬碰硬乌龟莫笑鳖，大家泥里歇むもん【無紋】むやくむやく【無益】むやみむやみ【無闇】むやみやたらむやみやたら【無闇矢鱈】むゆうびょうむゆうびょう【夢遊病】むよう