滚动活塞式膨胀压缩机
Rolling Piston Expander-compressor
摆动活塞式膨胀压缩机
swinging piston typed expansion compressor
活塞式膨胀机
reciprocating expansion-engine
滚动活塞式压缩机
rolling-piston compressor
复式滚动活齿传动
compound rolling teeth transmission
滚动活塞压缩机
rotate piston compressor
rotary compressor with rolling piston
摆动活塞式空气压缩机
Air compressor with pendular piston
差动活塞式压缩机
stepped piston compound compressor
电动式活动摄影机
electric motor movie camera