By means of computer technology, the authors calculated the group of equations for determining bending fatigue stress on the tooth root of the driving gear described in the thesis Calculation of Bending Fatigue Stress on the Driving Gear Tooth Root of A Reduction Gear, and worked out a set of diagrams of friction-effect factors (diagrams for short).

Mathematical expression of calibration curves for measuring friction factor by ring upsetting;

Rigid plastic finite element method was applied to simulate the upsetting process of high billet between two plain dies and , the methods to exert a small transverse disturbing force was discussed, and then the influence of friction factor upon the stability of high billet was also given.

Fast K-means algorithm based on influence factors;

Stomatal conductance and influence factors of seabuckthorn in Loess Hilly Region;

Summarize of study on the oil content of seabuckthorn and influence factors;