duplex ball bearing

例句：

1. 1.The new design of the car has a duplex ball bearing system, which greatly improves its performance.
   这款新车采用了双联球轴承系统，性能得到了极大的提升。
2. 2. The engineer carefully inspected the duplex ball bearings to ensure they were functioning properly.
   工程师仔细检查了双联球轴承，确保它们正常工作。
3. 3.In the manufacturing process, the duplex ball bearings are crucial for ensuring smooth operation.
   在制造过程中，双联球轴承对于保证机器顺畅运行至关重要。