相同的信封系统可以服务于不同类型的房间，因此在日后改变房间功能的时候就不再需要更改这些辅助设备了。

The same full fresh air system is able to serve all different room types, thus allowing for future changes of room function without having to modify the services.

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其主要功能是完成外卖的前期和辅助工作，即通过网络进行定餐和对服务进行评价。

Bespeak Meal System mostly used to accomplish accessorial work, namely order dish and grad the service.

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自动发电控制(简称agc)是能量管理系统(简称EMS)中最重要的控制功能，也是电力市场中一项重要的辅助服务。

Automatic Generation control (AGC) is of most important control function in Energy Management System (EMS), and is an important ancillary service in power market.

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