调速型液力耦合器，适用于各类电动机，但可靠性不如前者；
Speed variable hydraulic coupling device could be used in every kind of motors, but is less safety than the former.
液力耦合器是安装在电动机与负载之间的传动装置，它有其独特的工作原理。
The liquid dint matches the machine is to installs at the electric motor with load its spread to move the device, it have its special work principle.
液力联轴器是一种应用广泛的通用传动装置，它利用液体动能来传递功率，能改善电动机起动性能，实现过载保护。
Fluid coupling has an abroad application by drive unit, in the course of using. It USES liquid kinetic energy to transfer power, improves electromotor start capability, realizes over loading protect.
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