背压调节阀 [机] back pressure regulating valve ; Back pressure regulating ; back-pressure valve

背压调节器 [机] back pressure regulator ; [机] back pressure governor ; backpressure governor

背压调治阀 back pressure regulating valve

背压调整器 back pressure regulator

背压调理阀 back pressure regulating valve

背压压力调整器 Back Pressure Reducing Valve

背压式汽轮机调节系统 back pressure turbine governing system