具有可随负载性质的要求而有较地变化转速,从而达到功率的合理匹配和简化变速系统的特点,适用于矿山、机床、冶金、纺织、印染、化工、农机等部门需要逐级调速的各种传动机械。 Widely used in such industry which have step changes of rotational speed to meet the requirement of load character , as machine tools , mining , metallurgy , textile , printing and dyeing , chemical industry and agricultural machinery. atc .