We tugged so hard that the rope broke.我们使劲地拉以至把绳子拉断了。David tugged again and the muzzle slipped from Faber's grasp.大卫猛地一拉,枪口终于从费伯的手中滑脱了.A wry smile tugged at the corner of his mouth.他的嘴角带一丝苦笑.The sight of the poor ch...
它减少了气锁的机会.This reduces the chance of vapour lock.基本装置: 气锁的回转阀,低压大风量机.Basic device: An air - lock rotary valve and a high - volume and low pressure blower.膨胀节是防泄漏的,带有疏水,且与相连的设备之间具有气锁密封性.Expansion joints are leak proof and...