该授权机制不但易于实现，便于日常管理和维护，而且大大提高了整个移动数字电视广播系统的效率和容量。

The scheme is not only to be implemented easily and to reduce maintenance cost but also greatly improves the efficiency and capacity of the mobile TV broadcasting system.

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管理消防系统的日常维护和维修工作，确保消防系统保持良好的运行状态。

Supervise the routine maintenance for fire control system. To make sure the fire system in good working condition.

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维护技工的培训和日常管理。

Maintenance technician training and works management.

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