1.【机】阀,活门,舌门;汽门
2.【动,解】瓣,瓣膜;(贝)壳瓣;【植】荚片;(藻的)瓣;(果实的)裂片
3.【无线】〈英〉电子管,真空管
4.【建】门的一扇
1.【机】阀,活门,舌门;汽门
2.【动,解】瓣,瓣膜;(贝)壳瓣;【植】荚片;(藻的)瓣;(果实的)裂片
3.【无线】〈英〉电子管,真空管
4.【建】门的一扇
1.the part of a machine or piece of equipment that opens and closes in order to control the flow of air or liquid
2.the part of an organ or tube in your body that opens and closes to keep liquid flowing in the right direction
3.the part of some musical instruments that opens and closes to change the sound of the note
1.If the valves do not open and close at the right time or at all, air cannot get in and exhaust cannot get out, so the engine cannot run.
如果阀门不在正确的时间打开或关闭，空气就不能进入，废气也不能排除，引擎就无法工作。
2.But if one of the pumps fails, they may still have to make a call: not all the valves can be remotely controlled.
但如果有一台水泵出现了故障，他们可能还是要拨打电话，因为有些阀门还没有实现远距遥控。
3.Actuation is often desired for process automation, precision timing, and remote operation not possible with manual valves alone.
执行机构经常用于实现紧靠手动阀门无法实现的工艺过程的自动化，准确定时，以及远程操作。
4.Red Valves have been used in the engineering standards of many consultants who are building water treatment plants.
美国红阀公司产品已经成为许多水处理厂建设咨询公司的技术标准。
5.The depth of the cellar is such that the master valves of the Christmas tree are easy to reach from ground level.
方井的深度是这样设计的，圣诞树的总闸门从地表水平容易到达。
6.A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
二冲程发动机没有移动的阀，火花塞每次点火活塞到达循环顶端。
7.The Control-Disk valve's wide control range is twice that of traditional butterfly valves for better adherence to set point.
控制磁盘阀的控制范围比传统蝶阀的宽两倍为更好地坚持设置点。
8.As shown in these diagrams, Crane Y-Pattern stop check valves used in a boiler installation can be positioned for horizontal or upward flow.
正如这些图所显示的，美国克雷恩Y型截止止回阀用于锅炉上，可以安装在水平或流向朝上的流体上。
9.The assembly shall also include two resilient seated isolation valves, four resilient seated test cocks and an air gap drain fitting.
这种总成还应该包括两个弹性密封隔离阀，四个弹性密封测试旋塞和一个气隙排放连接件。
10.It opened to a low corridor that you could crawl through to a room clad in sheet metal that provided access to the air-conditioning valves.
打开它，一个低矮得仅容爬行的走廊呈现出来。走廊通向一个金属房间，里面是中央空调的阀门。