This design involved the automatic delivery system comprising client and server hardware, and required no visible change to water dispenser, no extra indoor wires or power source.

设计了包括客户端硬件和服务器端在内的自动配送系统，不改变饮水机外观，避免室内布线并无需额外电源。

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Power electronic transformer (PET) is a new type of transformer, which realizes voltage transformation and power delivery in the power system through power electronic conversion.

电力电子变压器(PET)是一种通过电力电子变换实现电力系统电压变换和能量传递的新型变压器。

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To ensure the secure data delivery in power system, a method of concealing the data by a kind of wavelet-based digital watermark technique is studied.

为保证电力系统中待传递数据的安全性，研究了利用一种基于小波的数字水印技术把电力系统中的传输数据隐藏起来。

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For every two units of electricity provided to consumers through the conventional power generation and delivery system, as much as 98 units are wasted along the way.

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