Study on RCS scaling relationship of perfect conducting objects in half space;

In order to improve the comparability,a kind of new scaling 1∶5 for JF122SB dynamometer for the scaling testing based on the parameters of the scaling 1∶1 for JF122 dynamometer was developed according to the similarity principle.

Study of DME HCCI Engine Emission Characteristic with Different Compression Ratios;

Investigation of geometric theory of double-arc modication of scroll compressor and its compression ratio;

Study on the Compression Ratio Optimization of a LPG-Diesel Dual Fuel Engine;

On the basis of discussing the positive effect of high compress ratio, high pressure injection, and other factors on diesel engine combustion process, the article puts foreword that utilizing high compress ratio and making use of high pressure common rail injection system to realize high pressure injection and b.

Systematic experiments in rectangular canals with 4 different contraction ratios for measuring flumes are conducted in laboratory,and an antitype experiment is also conducted at Water Diversion Project from Datong River to Qinwangchuan District for practical application.

A series of reasonable contraction ratios and angles are selected due to their energy dissipation effection.

Within the limits of experimental conditions,where the law of similarity with one and only geometrical scale for experiment of underwater explosion will not be suitable,several independent geometrical scales have to be selected in the experimental design.