而且峰值应力比与分叉应力比差值基本不变，但松砂较密砂差值大。
The difference in stress ratio between peak and bifurcation is almost the same for medium, dense or loose sands, but is greater than that for loose sands.
对单缸柴油机双喷油器直喷燃烧系统进行了研究，分析了供油系统油管分叉夹角及截面收缩比、燃烧室油线布置及几何形状的优化原则。
The analysis of duel-fuel combustion system of a diesel engine was made and the characteristics of the duel fuel combustion process were introduced.
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