dead weight safety valve
[新英汉石油技术词典]
dead weight safety valve自〔重〕压〔力〕安全阀,重锤式安全阀
是什么意思,dead weight safety valve的解释,dead weight safety valve的翻译
dead weight safety valve
[新英汉石油技术词典]
dead weight safety valve是什么意思,dead weight safety valve的解释,dead weight safety valve的翻译