safety valves

基本解释

That is because it constrains one of the biggest safety valves in America's economy: people's ability to move.
因为它关闭了美国经济的一个最重要的保险阀门：公众的流动性。
To shut down a reactor, safety valves are opened to release the steam and water is used to then to cool down the reactor core.
关闭核反应堆时，需要打开安全阀门释放蒸气，然后用水冷却堆心。
There were 100 identical safety valves which were checked.
他们检查了100个完全相同的阀门。

"This was one of their safety valves to weed out police calls, " says Jerry.
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Without the safety valves of emigration to Europe, which is getting harder, and families' willingness to support those out of work, Morocco would look far less stable.
ECONOMIST: The king is seeking to embrace moderate Islamists
Scared as I watch the impending train wreck of a global economy that is being recklessly driven toward a fiscal and monetary cliff by its political masters—safety valves welded shut, fuel being poured on the fire, desperately trying to outrun a disaster of their own making.
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A safety valve is a device which allows liquids or gases to escape from a machine when the pressure inside it becomes too great.
A safety valve is something that allows you to release strong feelings without hurting yourself or others.

安全阀
Safety valve is the protection against overpressure device of compressive equipment, its reliable operation plays an important role for the modern enterprise.
安全阀是承压设备的超压保护装置,它的可靠工作对现代企业的安全运行起着至关重要的作用。
化学
安全阀
The failure probability of the safety valve’s spring is calculated.
安全阀弹簧失效概率计算。
动力与电气工程
安全线