With the rise of theory on Business Process Reengineering and Project Management, the theory of "division of labor" is claimed to be outdated and that it should be substituted by the theory of "combination of labor".

Study on catalytic distillation coupling process of isobutene oligomerization;

The printing and dyeing wastewater was treated by a pulse cyclic fluidized bed(CFB) composite process with engineering scale of 5000m3/d.

Composite process composed of inorganic macromolecule flocculent polymeric ferric sul-fate (PFS) with leading effective microorganism (EM) was used for algae control of raw water from eutrophic water body.

The experimental method of aeration biological filter-chemical precipitation-sand filter composite process and water quality situations in experiment are introduced.

Experimental Study on Treatment of Rural Domestic Sewage by Combined Technology;

Then the incline plate sediment-continuous filtering-ultrasonic filtering-reverse osmosis combined technology was used to treat wastewater.

While gas recovery getting ito the medium and later stage,the combined technology of drainage gas recovery by gas lifting and by foam are developed in order to suit the condition of constantly descending of formation pressure.

The computation about the thickness ratio of four sheets of metallic strips and the compound technology is presented.