loop check

例句：

1. 1. The engineer performed a loop check on the new machine before it was put into operation.
   工程师在机器投入运行前对其进行了循环检查。
2. 2.The team leader conducted a loop check to ensure all systems were functioning correctly.
   团队领导进行了一次环检，以确保所有系统都正常工作。
3. 3. During the maintenance cycle, we perform loop checks to identify any potential issues before they become major problems.
   在维护周期中，我们进行环检以识别任何潜在的问题，防止它们成为主要问题。