When you select an HTML element, Expression Web also shows a small bubble with additional information, such as size, distance from the left, and distance from the top.

当你选择一个HTML的元素，Expression Web也会显示一个小的提示。比如大小，到左边的距离以及到顶端的距离。

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Media theories of distance education: element, assistance or focus?

远程教育媒体理论：要素，辅助，还是中心。

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Having analyzed many factors, such as distance, Angle, element size, the number of gauss integral, etc., which have great effect on the gauss integral precision.

分析了距离、角度、单元尺寸以及高斯点个数等因素对积分精度的影响，提出了一套满足不同精度要求的积分判据。

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