英文: That's relief.
中文: 真令人欣慰。英文: Safety relief valves shall be labeled for relief pressure rating.
中文: 安全减压阀要有标示,标明压力释放级别。英文: What a relief!
中文: 真叫人宽慰!英文: Remove the relief valve cover, stem/diaphragm assembly, and relief valve spring.
中文: 拆卸安全阀阀盖,阀杆/隔膜总成,和安全阀弹簧。英文: Relief was instantaneous.
中文: 痛苦的消除是瞬间的事