【电学】旋转变压器（Ｓ）

intermeshing engagement and intermeshing engagement in rotary-piston machines or engines

combination of rotary-piston pumps with oscillating-piston pumps

rotary-piston pump oscillating-piston pump

electrically driven rotary sidewall sampler

rotary converter

rotary-type admission control vane rotary-piston pump

cam mechanism for interconverting rotary motion and oscillating motion

converting reciprocating into rotary motion or vice versa in dynamo-electric machines