pitch-rolling coupling 纵摇横摇耦合
rolling vane pump coupling 回转滑片泵联轴器
rolling piston radial pump coupling 径向旋转活塞泵联轴器
rolling-ball coupling 滚珠联轴器
Compared with the rolling coupling, the roller coupling has such deficiency as easy to be worn, a low transmission efficiency and difficult to be maintained.
与滚动联轴器相比，滚珠联轴器的传动效率低，容易磨损破坏，维修相对困难。
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