Double row deep groove ball bearings are very sensitive to misalignment.
双列深沟球轴承是非常敏感不对。
The double direction Thrust ball bearings can support bi-directional loads.
在双向推力球轴承可以承受双向的负载。
You cannot double hit the ball. It's wrong.
你不能连击球体，那是错误的。
You cannot double hit the ball. It's wrong.
你不能连击球体，那是错误的。
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