In order to realize the purpose of energy-saving and consumption-reducing for the coal-fired power unit, the unified physical model of heat-economic analysis was established for the first time, which was based on the mass-balance and energy-balance equations.

In order to cater to the needs of WIP management,the paper brings forth an unified material information management model based on material process,virtual warehouse and a series of material operations.

By deep researching into the intelligent controls-oriented virtual instrument(ICVI) and its development system,the quintuple systematic model based on computer is introduced into ICVI systems,the uniform model of ICVI is built up and dissertated it in detail.

A unified model for harmonics and reactive current closed-loop or open-loop detection was established based on instantaneous reactive power theory.

the article constructs a unified model of gravity and electromagnetic with torsion both in internal sp ace and in four-demensional space-time.

Relationship between forces born by bridge and rail under the action of temperature variation, deflection and braking are analysed by using bridge ballast rail as an unified model, and simply supported bridges, 30 m and 40 m in span length, are calculated with a programme of finite element of two dimensional frame structure.