"frictional electricity"
"frictional heat"
"frictional gearing"
frictionn.摩擦;摩擦力;分歧
friction law牛顿摩擦定律
friction pin摩擦固位钉
friction feed摩擦送纸,摩擦推进法,摩擦传输,摩擦进给
friction stir摩擦搅拌
friction band摩擦闸瓦
friction pile摩擦桩,抗滑桩,摩阻桩
friction knot[医] 双结
friction drum摩擦滚筒,摩擦鼓轮