您要查找的是不是：
- hydraulic relay valve piston cup 液压继动阀活塞皮碗
- hydraulic relay valve return spring 液压式继动阀回动弹簧
- The relay valves which are used at the end of long pipelines can quickly fill gas cells with compressed air, for example, in trailer or semitrailer brake systems. 继动阀用于长管路的末端，使储气筒的压缩空气快速充满制动气室，如在挂车或半挂车制动系统中。
- The anchor man in a relay team runs last. 接力队中的主力跑最后一棒。
- Six teams competed in yesterday's relay race. 六个队参加了昨天的接力赛。
- Have you turned off the water valve? 你关掉水阀了吗？
- She want to relay the carpet in her new home. 她想重新铺设她新房子的地毯。
- The concert was broadcast by relay. 这场音乐会是实况转播的。
- She wanted to relay the carpet in her new home. 她想重新铺设她新房子的地毯。
- A new relay of horses was harnessed to the cart. 用作轮换的马都已套到了那辆马车上。
- We need an eye bolt to fit this valve. 我们需要一个有眼螺栓来固定这个阀门。
- He soon detected the faulty valve. 他很快查到了出毛病的阀门。
- The pump sucks air out (of the vessel) through this valve. 这台泵通过这个阀门把(容器中的)空气抽出。
- An electrical relay used to control the flow of power in a circuit. 开关一种用来控制电路中电流量的电流器件
- The exhaust valve on my car have burn out three times. 我车子上的排气阀已烧坏三次。
- The exhaust valve on my car has burnt out three times. 我车子上的排气阀已烧坏三次。
- I will relay your opinion to the headmaster. 我愿把你的意见转告校长。
- Composed of a single valve or piece. Used of a shell. 单瓣的由单个瓣膜或部分组成的。用于壳
- Are you in the field for the relay race? 你参加接力赛跑吗?
- Mike won the first in the relay race. 迈克在接力赛中取得了第一名。
