frictionizev.擦
frictionn.摩擦;摩擦力;分歧
friction velocity cover冲刷
friction test equipment摩擦试验装置
friction sawing machine[机] 磨擦锯机
frictional loss of head水头摩擦损失
friction driving device摩擦传动装置
Frictional oxides layer摩擦氧化层
friction damping factor摩擦阻尼系数
friction-board hammer夹板锤,圆盘摩擦锤
friction-retained pin摩擦固位钉
friction and resistance摩擦磨损