relief valve
noun
A valve serving to relieve pressure in a system when it becomes too high by opening to allow the escape of gas, water, steam, etc.
Origin
Mid 19th century.
| 单词 | relief valve |
| 释义 | relief valvenoun A valve serving to relieve pressure in a system when it becomes too high by opening to allow the escape of gas, water, steam, etc. Origin |
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