【机械工程；照明；加热；武器；活塞环垫块；活塞环内燃】承载辊子

solid-skirt piston

hydrostatic engines of reciprocating-piston type with

piston-type accumulator

reciprocating-piston engine, hydrostatic (reciprocating-piston motor)

piston displacement【机】;piston swept volume【机】;swept volume【机】

rotors with displacement rolls for rotary-piston pumps

switch, actuated by piston

combination with oscillating-piston pumps