| 摘要 |
<p>The invention relates to a hydraulically or pneumatically pumping , compression and vacuum device. According to the invention, the device carries out the sucking in and the discharging of a liquid (5) or of a gas (5a), said liquid and gas being circulated by means of a centrifugal pump (21), of a distributing rotor (2), of a rotary distributor (80) or by means of some electrical valves (E7 and E8).</p> |
