valve: [14] The etymological notion underlying valve is of a door opening and closing. The word was adapted from Latin valva, which denoted one of the sections of a folding or revolving door, and may have had links with volvere ‘roll’ (source of English revolve). It carried its original meaning with it into English, but it was not used at all widely until various metaphorical senses, such as ‘flap controlling the flow of a fluid’ and ‘half of a shell’, evolved. The electronic valve is so called because current can flow in only one direction through it; the usage dates from the early 20th century.
valve (n.)
late 14c., "one of the halves of a folding door," from Latin valva (plural valvae) "section of a folding or revolving door," literally "that which turns," related to volvere "to roll" (see volvox). Sense extended 1610s to "membranous fold regulating flow of bodily fluids;" 1650s to "mechanical device that works like an anatomical valve;" and 1660s in zoology to "halves of a hinged shell." Related: Valved.
valve 英文释义
1. a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
2. device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
3. control consisting of a mechanical device for controlling the flow of a fluid
valve 双语例句
1. The bag is resealed with a simple twist of the valve.
只需拧一下阀门，气囊就能重新密封。
来自柯林斯例句
2. The intake valve was jammed open.
进气阀卡住了，关不上。
来自柯林斯例句
3. He replaced a dud valve.
他换掉了坏阀门。
来自柯林斯例句
4. He also has pro-blems with a heart valve.
他的一个心瓣也有毛病。
来自柯林斯例句
5. Exercise is a good safety valve for the tension that builds up at work.
锻炼身体是排解工作压力的好办法。
来自《权威词典》
valve 实用场景例句
He also has problems with a heart valve.
他的一个心瓣也有毛病。
柯林斯高阶英语词典
Two types of substitute valves are available: a mechanical valve or a biological valve.
通常有两种可选的瓣膜: 一种为机械瓣膜、一种为生物瓣膜.
期刊摘选
The sealing points on the nipple and valve outlet are comprised of highly polished torroidal beads.
管接口和阀门排气口上的密封点由非常光滑的l垫珠组成.
期刊摘选
The three major forces involved in valve actuation are thrust, torque and rimpull.
决定阀门操作的力主要有三种:推力, 扭矩和边缘拉力.
期刊摘选
Minimum dimension from centerline of valve to handwheel when ordered without floorstand.
如果不订购地轴承架,则最小长度尺寸为阀门中心至手轮的长度.
期刊摘选
Difficult to make valve tight on both seats due to seat face distortion.
由于阀座面的变形而导致两个阀座难于实现紧密性.
期刊摘选
A new device for measuring run out error of needle valve seat's cone surface is proposed.
推出了一种新的针阀体座面圆跳动误差测量装置,介绍了误差的计算与评定方法.
期刊摘选
The valve shall have a BTU rating in excess rating of the boiler's heating output.
这种阀门的BTU释放能力应该超过锅炉的热输出能力.
期刊摘选
Each pedestal heating equipments want to install each drain valve, in order to prevent affecting each other.
每台加热设备要各自安装疏水阀, 以免互相影响.
期刊摘选
When in place, the gasket will be seated and flush with the valve body ends.
放置好后, 垫圈将与阀体连接端口一起固定和冲洗.
期刊摘选
The Valve analysis represents a typical COSMOSFloWorks internal analysis.
这个阀门分析例子代表典型的COSMOSFloWorks的内部的分析.
期刊摘选
Shield or screen valve from direct - sun exposure.
对阀门进行保护或遮蔽,避免阳光直接暴晒.
期刊摘选
Methodology: A systematic framework for pyroelectric infrared imaging based on the crystal valve modulation is constructed.
方法: 构造一个基于液晶阀调制的热释电成像的系统,在该系统上进行关键技术的实验研究.
期刊摘选
Hydraulic chucking table: It is used to chuck and position the tested valve automatically.
液压装夹台: 液压自动定位夹紧被校验的阀门.
期刊摘选
Verify inlet and outlet valve to 100 EX 153 are open.
确认进口阀和出口阀打开,连接到100EX153.
期刊摘选
Series 775 Double Check Valve Assemblies provide protection of the potable water supply for non - health hazard - connections .
系列775双止回阀总成防止 交叉连接 处 非 健康危害的流体污染饮用水供应系统.
期刊摘选
The valve features a transitional flow contour that increases in flow area from inlet to outlet.
该阀采用了过渡流轮廓,增加了从入口到出口的流动面积.
期刊摘选
Each of your heart's ventricles has an outlet valve.
每一侧的心室都有一个出口瓣膜.
期刊摘选
The exhaust valve on my car has burnt out.
我汽车上的排气阀烧掉了.
《简明英汉词典》
Exercise is a good safety valve for the tension that builds up at work.
锻炼身体是排解工作压力的好办法。
《牛津高阶英汉双解词典》
The intake valve was jammed open.
进气阀卡住了，关不上。
柯林斯例句
He replaced a dud valve.
他换掉了坏阀门。
柯林斯例句
Residents heard an enormous bang as a safety valve on the boiler failed.
由于锅炉的安全阀失效，居民们听到了砰的一声巨响。
柯林斯例句
A spurt of diesel came from one valve and none from the other.
一股柴油从一个阀门中喷射出来，另一个阀门中则没有喷出任何东西。
柯林斯例句
The bag is resealed with a simple twist of the valve.
