双动的

摘要通过分析滑片泵存在的缺陷，提出了一种利用滚柱控制滑片运动轨迹，使滑片与定子内表面保持微小间隙的新型双作用无接触滑片泵。

double-acting brushing machine

single-stage double-acting centrifugal fresh water pump

four lever arm type double-acting hydraulic shock absorber

double-acting napping machine

double-acting power unit【自】

double-acting compressor

double-acting duplex slush pump

double-acting pump【机】