The prime mover may be a gas reciprocating engine.原动机可能是燃气往复式发动机.Almost all automobiles use the reciprocating engine.几乎所有的机动车都使用往复式发动机.Compressor may be reciprocating positive displacement or centrifugal.压缩机可以是活塞式、螺杆式或离心...
Distributive characters of hypervelocity fragments impacting double - level target were researched.研究了超高速破片碰撞 双层 靶形成碎片云的分布特点.Reorganization is necessary on the distributive side of this industry.就这个行业的配销方面来说，重组是必要的。Nozic...
Veterinarian Evelyn Ivey squirts medicine down a boa constrictor's throat.兽医伊芙琳正往一条大蟒蛇的咽喉部位喷药.Shelly took the sick cat to a veterinarian.雪莉带着生病的猫咪去看兽医.He is a veterinarian, he is very kind to animals.他是位兽医, 他对动物们可好了...