Under the condition that Y direction clearance is in accordance with design requirement,24 compressors with different fixed center offsets in X direction were assembled and divided into three groups for cooling capacity tests.

The paper introduces an centering deviation instrument made by self, which is simple in manipulating and suitable to checking the coaxial degree of motors and reduction gears for the heavy belt conveyors underground.

In general condition,it should be allowed that eccentric error is larger than ±10% of average air-gap,but over-large eccentric value can produce very much unbalanced magnetic pull,and then increase the deflection of motor shaft,thus critical speed is influenced.

By introducing the related psychological research achievements into assets pricing field,it s assumed that investors are finitely rational,that there is a real decision-making deviation,and that it s in the assets pricing model based on investor s psychological deviation that abnormal phenomena in capital market are combined with investor s behavior from dif.

In the process of classroom instruction appraisal,the cognitive deviations of the appraisers affect the appraisal accuracy,and the psychological deviations of the students appraised can also bring inaccuracy.

This paper generally analyzes the causes of students behavior and psychological deviation by investigating students deregulation and primarily discusses the ways of rectifying students behavior and psychological deviation in the process of physical education.

A discussion on how to eliminate eccentric error;

The existing problems on analysis of eliminating eccentric error of spectrometer in some textbooks is pointed out,and the limitation of literature A discussion on how to eliminate eccentric error is indicated.

The paper discussed the eccentric error and method of eliminating eccentric error,and presented a way calculating eccentric grand by the reading difference of two cursors.