By analyzing the moving state of the bulk-solid materials in the pneumatic pipes,the basis may be provided correctly for choosing the transporting parameters and designing the pneumatic systems.

Movement Analysis of Cereal in Axial Flow Threshing Roller Space;

Type 2,those related to the movement of things,"affirmation-negation-affirmation","quantitative change-qualitative change-quantitative change","contradiction-coordination-contradiction",an.

Study of the yarns motion state in the nozzle for reducing hairiness

The result shows that the bottom drill string exhibits three kinds of motion states at different rotary speeds and a certain weight on bit, including regular swaying,irregular swaying and regular whirling.

Analytical results indicate that the motion state depends mainly on the structural parameters of the rotary seal,friction coefficient of friction pairs,and ope.

The author puts forward four kinds of method in adjusting and controlling the sports state .

The result shows that mental pressure of life events has negative relationship with sports state.

During observation of motion of sensitive galvanometer it alwaystakes time to operate reversing switch(K1) in this a period of time external resistance is infinity ,so the error of obervation and measurement are caused in experiment.

Physics-not only mechanics, acoustics, but also optics, thermodynamics, but also electronics, nucleus; not only the structure of subject, but also the motion of subject, but also the mutual action between subjects-all proves that subject is one divided into three.