This paper raises the dynamlc mathematical model for vacuum pressure of condenser during turbine vacuum dropping test, and analyses the relationship between air leakage flow and vacuum dropping speed during test.

Study on regeneration of ethanol-loaded activated carbon by microwave irradiation under vacuum condition;

The research of far-infrared drying of carrot under vacuum conditions;

Effects of overlap steps on oxygen production by vacuum pressure swing adsorption;

The influence factors on the polyester polycondensation vaccum system and their treatment;

Different type of vaccum pump and its combination used in existing polyester plant were introduced,also the economic analysis was done.

Introduced are four displacing methods, namely complete mixing, non-mixing, vaccum deaeration, and pressure displacement.

The craft and application of vacuum brazing for honeycomb material;

Influence of active element Mg on joint properties of aluminum alloy vacuum brazing;

Morphology of carbide on diamond interface by vacuum brazing;

Industrial experiment on recovering metals from waste zinc-tin alloy by vacuum distillation;

Cadmium recovery process and modeling in the Ni-Cd batteries by vacuum distillation;

Purification of γ-irradiated 30 % TRPO-ke rosene by vacuum distillation;