In the distance, there is the air compressor. All valves in this system are pneumatically operated with quick opening and closing.
远处为空气压缩机，系统内所有自动阀均为气动，开关迅速。
2
Some machines coming with air cooling or water cooling system can be operated for longtime.
部分机型备有冷风或水冷系统方便长时间运作。
3
Its elevation system is operated by linearity electric motor. Others adjustment operated by air spring and manual. It is a kind of electric and air spring double-action operating table.