火山就像释放压力的巨大安全阀。

Volcanoes are like giant safety valves that release the pressure.

编制安全阀和其它安全装置清单

Prepare a list of safety valve and other safety devices

其中的另一输出管路接有安全阀。

And the other output pipeline is connected with a safety valve.

对于空气和蒸汽用安全阀，多采用不封闭式安全阀。

Used for air and steam safety valve , safety valve used is not closed.

油管球形安全阀

Ball type tubing safety valve

低压安全阀弹簧

Low pressure safety valve spring

安全阀的泄放容量

Relieving capacity of safety valve

安全阀容量换算

Capacity conversion for safety valve

生活水水路无需安全阀，预防漏水。

No safety valve in D. H. W.

泵的安全阀失灵了。

The safety valve of the pump failed to work.