let-down valve是指什么? 谢谢两位。 原文: use oversized press let-down valves to reduce corrosion caused by velocity effects. reduce erosion-corrosion at inlet nozzles by using impingement plates or dummy rods. let-down valve 我翻译的是泄压阀 dummy rods 我翻译的是平衡杆 不知是否恰当。查看更多