工作人员必须完全熟悉本手册所陈述的安装，运行，维护及维修的程序和相关注意事项。

Personnel must be thoroughly familiar with all warnings and procedures for installation, operation, maintenance and repair contained in these operating instructions.

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工作人员必须完全熟悉本手册所陈述的安装，运行，维护及维修的程序和相关注意事项。

Personnel must be thoroughly familiar with all warnings and procedures for installation, operation, maintenance and repair contained in these operating instructions.

youdao