frictionizev.擦
frictionn.摩擦;摩擦力;分歧
friction and abrasion摩擦磨损
friction conefficient摩擦系数
friction-and-wear摩擦磨损
frictional flow split摩擦分流
friction tile machine摩擦瓦机
friction torque curve摩擦力矩曲线
friction transmission摩擦传动
friction compensation摩擦补偿
friction conglomerate擦碎砾岩
friction unemployment摩擦性失业, 短期失业