means

Vapor is contained in all air, but when be being compressed by air compressor when air, the relative humidity of water increases to 100% . To avoid the problem that the water precipitation in downstream facilities poses conduit and connective, must dry compress air. It is below a few dry compress airy method: 1, excessive compress air to be compressed by machine be shrinkinged by empty atmospheric pressure higher than expecting actuating pressure pressure, this is meant be given by condensation in more water in reducing a process system. When