安装家庭用发电系统(光电转换系统或风车)。
Installing home power generating capacity (a photovoltaic system or a windmill).
软件包通常包含一个或多个程序，但有时它却只包含文档、窗口管理器主题或其它易于用可安装软件包分发的文件。
A package usually contains a program or programs, but sometimes it has only documentation, window manager themes, or other files that are easier to distribute in an installable package.
用周边专用的微波发射器给一些安装在建筑物或工业机器上的无线传感器等小型电子设备供电已经成为可能。
It is already possible to power small electronic devices, such as wireless sensors installed in buildings and industrial machinery, using a dedicated microwave transmitter nearby.
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