variable double-piston pump 变量双联柱塞泵

double acting piston pump 双作用活塞泵 ; 双效用活塞泵 ; 双作用式活塞泵 ; 双程活塞泵

double piston pump 双活塞泵

double acting piston pump coupling 双作用活塞泵联轴器

double-piston mortar pump [建] 柱塞式双缸灰浆泵

double-performing piston pump 双作用式活塞泵

Double-oblique-type piston pump 双斜式柱塞泵