又有一条新航线开航了.Another new air route has been opened up.这船从香港开航驶往上海.The vessel is sailing from Hongkong to Shanghai.你们轮船什么时候开航?When will your ship sail?...
流量调节采用针阀或限流器.Adjustment is provided in the form of a needle - value or restrictor.限流器采用两组阀结构,延长了限流器的使用寿命.The restrictor was component of two valves and prolongs its use life.首先,本文概述了故障限 流器 的研究现状 、 存在问题以及本文所作的工作.To correc...