At present household refrigerators and air conditioner compressors are cubage type refrigeration compressor, which can be divided into reciprocating compressors and rotary compressor.
目前家用冰箱和空调器压缩机都是容积式的制冷压缩机，其中又可分为往复式压缩机和旋转式压缩机。
2
In the first case (horizontal spindle), the machine usually has a planer-typereciprocating table on which the workpiece is held.
在第一种情况(卧式主轴)，卧式磨床通常具有安装工件的刨床式往复工作台。
3
A type of fluid pump in which reciprocating pistons or plungers displace the fluid.