top guide bearing

例句：

1. 1.The top guide bearing is critical for the smooth operation of the machine.
   顶导轴承对于机器的平稳运行至关重要。
2. 2. The engineer carefully inspected the top guide bearing to ensure its proper functioning.
   工程师仔细检查了顶导轴承，以确保其正常工作。
3. 3. During maintenance, the technician replaced the worn-out top guide bearing with a new one.
   在维护过程中，技术人员用一个新的顶导轴承替换了磨损的部件。