coefficient of speed fluctuation 机械运转不均匀系数 ; [动力] 转速波动率 ; 机械运转不平均系数

coefficient of velocity fluctuation 运转不均匀系数 ; 运转不匀称系数 ; 运转不平均系数

the coefficient of fluctuation 波动系数

coefficient of moment fluctuation 力矩波动系数

fluctuation coefficient of freight flow 货流波动系数

fluctuation coefficient of passenger flow 客流波动系数