| 释义 |
valvevAlvn [C]a device which allows air or liquid to enter, or be prevented from entering, a container, or a similar structure in the human body, esp. the heart and the VEINS, that controls the flow of liquid, esp. blood阀，活门;瓣膜The nuclear reactor was briefly shut down after an escape of non-radioactive steam from a faulty valve.从一只有毛病的活门里溢出了一股非放射性雾气后，核反应堆暂时关闭。The valve failed to open/close.活门开启/关闭失常。On-shore oil fields are often built with emergency valves below ground level, to shut off the supply if a well gets out of control.陆上油田常常在地面以下建造紧急活门，在油井失控的情况下用以关闭供油管道。If the No. 3 hydraulic line became ruptured, a shut-down/shut-off valve would automatically close.假如第三号液压管道破裂，一只关闭阀会自动关闭。It was a weak heart valve that caused her death.是因为一心脏瓣膜虚弱导致了她死亡。A valve is also part of a musical instrument such as a TRUMPET which changes the sound by controlling the flow of air.[音](喇叭等乐器上的)活瓣
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