1)plug pump,旋塞泵2)plug for air pump,气泵旋塞3)rotating piston pump,旋转活塞泵4)rotary-plunger pump,旋转柱塞泵5)rolling piston radial pump,径向旋转活塞泵6)swash type piston pump,旋转斜盘活塞泵
用法例句
In the design of a rotating piston pump rotor, the empirical formula has many disadvantages.