A process has a main window associated with it only if the process has a graphical interface.

仅当进程有图形界面时，该进程才具有与其关联的主窗口。

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And, as a bonus, the online document has an inviting graphical interface for delving into the numbers for each country.

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The company, Thin Film Electronics, has a license with reasearch center PARC (inventor of the graphical user interface and the computer mouse) to market printable microelectronics devices.

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