变换最初编写方法对付矩形类的实例，它做得很好。
The method Transform was originally written to deal with instances of the Rectangle class, and it does its job quite well.
为了验证该方法的可靠性，本文对无限空间和半空间中矩形类、椭圆类和半椭圆类平片裂纹问题进行了计算。
To test the reliability of this method, rectangular crack elliptical crack and semi-elliptical crack in infinite space and in semi-infinite space are calculated.
我见过的许多基于CSS的导航标签大都具有一类的特征：矩形的色块，也许仅仅是一个轮廓，对于当前选中的标签则没有边框，标签在鼠标指针游至其上时改变颜色。
Many of the CSS-based tabs I've seen suffer from the same generic features: blocky rectangles of color, maybe an outline, a border disappears for the current TAB, a color changes for the hover state.
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