The media-type attribute for subfolders is left empty, such as that for the pictures folder, which is empty in my example, but normally contains the graphic source files for any embedded pictures.

用于子文件夹的media - type属性是空的(例如我示例中的Pictures文件夹)，但通常会在这些子文件夹中包含任何嵌入图形的图形源文件。

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For example, if you had a graphic called mygraphic.png, you could attach an attribute called "thumbnail" that contained a small version of the image.

例如，如果您有一幅名为mygraphic . png的图像，您可以附加一个名为“thumbnail”的属性，它包含该图像的一个小版本。

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The system can provide the drawing of basic graphic element, the connection with attribute database, and meet the basic need of the field management.

该系统能够实现基本图形元素的绘制，并能与其属性数据进行连接，能够满足农田管理的基本需求。

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