Speed variable hydraulic coupling device could be used in every kind of motors, but is less safety than the former.

调速型液力耦合器，适用于各类电动机，但可靠性不如前者；

youdao

Speed variable hydraulic coupling device could be used in every kind of motors, but is less safety than the former.

调速型液力耦合器，适用于各类电动机，但可靠性不如前者；

youdao