A new approach to representation of interference\'s quantity in practice was presented by means of interference volume,which was calculated accurately based on surface digital model.

The forces in joining the copper pipe to the aluminum radiator through interference fit are analyzed and calculated,and a new technique of pipe screwing and expanding is introduced so that the force of moving forward when the pipe is being expanded is reduced.

This article analyzes the difference of the temperature between rudder bear installation and vessel sailing area;In this point of view, determination of the interference is deduced when coppery rudder bush is installed .

For a high speed motorized spindle, the interference fit between the shaft and bearing has a great influence on the stiffness,rotary accuracy and life of the spindle.

The over-fixation of mine-used rotary drill bit tooth hole was calculated by the finite element method on ANSYS,also analyzed the distribution laws of tooth hole and tooth stress field and influence of the over-fixation.

The excess molar volumes yE of{1, 8-cineole + CH3OH, + C2H5OH, + CH3 (CH2)2OH, + (CH3)2CHOH, + CH3 (CH2)30H, + (CH3)2CHCH2OH were determined from density measurements using a vibrating-tube densimeter at 298.

The excess molar volumes V E of {THF+ o-xylene, +m-xylene,+p-xylene, +ethylbenzene} were determined in the whole range of composition using a vibrating-tube densimeter at 298.