Moreover, the friction angle' s change rule and the reasons of different granules were analyzed and pointed out under the same water ratio.
在此基础上进一步分析了不同粉砂粒含量的土在相同含水率时的摩擦角变化规律及其原因。
2
Analyses parameter have inclined Angle, pipe diameter size, gas liquid ratio and friction factor and so on.
分析参数有：倾斜角度、管径大小、气液比和摩阻系数等。
3
The present study shows that there is a critical seal pressure which is only related to the compression ratio and the friction coefficient, but does not depend on the radius of the elastomer ring.