Analysis about processing error influencing the stability of gear;

Research of operating stability on the loader;

Gearshift Stability of Power Gear Governor;

Singularity and Stationarity Study of TPT - 2PTT Parallel Machine Tool;

Based on the fundament concept on stationary and ergodic stochastic process and lots of bore hole data,the authors examined the stationarity and ergodicity of spatial on static sounding test data.

The unit root test method in econometrics is used to examine the stationarity of five economic indexes about Zhongguancun Science Park.

For the nonstationarity and spectrum chaos of the bearing vibration signal,threshold de-noising based on wavelet decomposition was put forward.

Base on that,the application of wavelet transformation in fault diagnosis to analyse nonstationarity of roller bearing vibration signals with Daubieches wavelet is introduced.

Design and Implementation of the Test Apparatus for Measuring the Comfortableness and Smoothness of Trains;

The effects of spark on the combustion mode transition have been investigated in order to improve the smoothness of the transition.

This paper points out the force characteristics of continuous beam arch composite bridge,introduces basic meaning and evaluation criterion of train safety,comfort and smoothness,and calculates and analyzes train running safety,comfort and smoothness of Kunyang grand bridge in Wen-fu line based on space vibration computational model of train-bridge time-varying system.