frictionizev.擦
frictionn.摩擦;摩擦力;分歧
friction with the air与空气的摩擦
frictional properties摩擦性能
frictional constraint摩擦约束
friction countershaft摩擦离合器副轴
friction feed printer摩擦进纸打印机
frictionless cylinder无摩擦气缸
frictional dermatitis磨擦性皮炎
friction stir welding搅拌摩擦焊
friction ratchet stop摩擦棘轮停止器
friction nonlinearity摩擦非线性特性