Graphical user interface (GUI) is critical component of today 's software.

图形用户界面(GUI)是当今软件必不可少的部分。

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Install inside component: Omnipotent change-over switch, press the button, an ampere meter, Indicator lamp wait, can load other instruments with according to user "s request."

内装元件主要有：万能转换开关，按钮，电流表，指示灯等，可按用户要求装其他仪表。

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