Inner friction angle 内摩擦角
effective angle of inner friction 有效内摩擦角
inner friction 内摩擦
For tapered roller large end and sliding friction between the inner wall, the speed limit is often lower than the same size cylindrical roller bearings.
因圆锥滚子大端与内圈挡边之间滑动摩擦，其极限转速往往低于同尺寸的圆柱滚子轴承。
Teflon Piston-ring integrated with piston, not only reduce the friction and noise, but also avoid inner-leakage.
特氟龙材料的活塞环与活塞熔接成一体不仅减磨效果好，同时能减少噪音防止内泄。
The difference between inner friction angel of sandy soil and natural slope angel of sandy soil is also put forward in this paper.
本文论述砂土内摩擦角的测定方法，及砂土内摩擦角与砂土天然坡角的区别。
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