Trapping gas pump include: adsorption pumps and low-temperature pumps.
气体捕集泵包括：吸附泵和低温泵等。
2
If large facilities to ensure no oil, no oil pump need not choose ethnic groups, such as: water pump, molecular sieve adsorptionpump, sputter ion pumps, heat pumps.
若设施宽大务求无油时，无须选各族无油泵，如：水环泵、分子筛吸附泵、溅射离子泵、高温泵等。
3
The starting motor, the vacuum pump starts to work, adsorbs the floor to produce the adsorption results.