frictional force [力] 摩擦力 ; 磨擦力
frictional drag [力] 摩擦阻力
internal frictional angle 内摩擦角 ; 内磨擦角
frictional angle 摩擦角
FRICTIONAL LINING 摩擦片 ; 磨擦片
frictional soil 内摩擦阻力大的土壤 ; 非粘性土 ; 内磨擦阻力大的土壤
Frictional escapement 非自由式擒纵机构
Thirdly, the friction properties and friction models are introduced briefly. Nonlinear frictional dynamic characteristics of NC table are emphatically studied and the following conclusions are presented.
接着,简单介绍了摩擦力特性和摩擦模型。
参考来源 - 数控工作台非线性动态特性的辨识研究·2,447,543篇论文数据，部分数据来源于NoteExpress
"frictional electricity"; "frictional heat"; "frictional gearing"
以上来源于: WordNet
The harder rocks push against each other, the hotter they become; in other words, pressure itself, not only the rocks' properties, affects frictional heating.
岩石相互推挤得越厉害，它们就会变得越热；换句话说，不仅是岩石的性质，压力本身也影响摩擦加热。
How does the frictional force do that?
摩擦力是怎么做的？
And as I increase the tilt this frictional force will get larger and larger and larger and then there comes a time that the object will start to slide.
随着倾斜度的变大，摩擦力，会越来越大，加到某一程度，物体会开始下滑。
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