转速控制手轮分离用离合器: clutch for speed control handwheel disengagement
精确: accurate; exact; precise 短语和例子精确的统计 accurate statistics; 下一个精确的定义 give a precise definition; 精确无误 with unerring precision; 计算之精确 precision in calculation; 她使自己的措词更加精确。 she fined down her c