【机械工程】旋转管（旋鼓），旋鼓炉

positive displacement self-priming progressive cavity rotary pump

rotary switch with latch for change of direction of rotation and lost motion

combinations of two or more rotary pumps

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

herringbone milking station, rotary milking station, tandem milking station

rotary-drilling machine with gearing for mining

wine press using press rams cooperating with a rotary casing

rotary gyroscope for indicating the vertical