在整个系统中，技术员必须能够维护，诊断和纠正问题。

Technicians must be able to maintain, diagnose, and correct problems throughout the entire system.

youdao

在整个系统中，技术员必须能够维护，诊断和纠正问题。

Technicians must be able to maintain, diagnose, and correct problems throughout the entire system.

youdao