three ball and trunnion universal joint

例句：

1. 1.The engineer designed the new machine with a three-ball bearing to ensure smooth operation.
   工程师设计了这台新机器，带有三球轴承以确保平稳运行。
2. 2. The trunnion was attached to the base of the tower using a universal joint to allow for easy adjustment.
   使用万向节将转轴连接到塔基上，以便轻松调整。
3. 3. The construction crew used a three-ball bearing to connect the heavy equipment together, reducing the risk of damage during installation.
   施工队使用三球轴承连接重型设备，以减少安装过程中损坏的风险。