安全阀作为保障压力容器安全运行不可缺少的一部件，在压力容器上已被广泛应用。
The safety valve is a indispensability component which ensures the safety working of the pressure vessel. It has be used on the pressure vessel widely.
安全阀作为保障压力容器安全运行不可缺少的一部件，在压力容器上已被广泛应用。
The safety valve is a indispensability component which ensures the safety working of the pressure vessel. It has be used on the pressure vessel widely.
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