另外，矩形环的压力损失大于三角形环。

Moreover, the pressure lost of rectangular annulus is bigger than that of triangular one.

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但它的挑颜色却相当简单，只需画一个一个长方形的撑住色相环；这样，矩形的四个角就会各压住一个色相。

Picking the colors for these is fairly straightforward, one simply draws a rectangle over the color wheel; each of the corners anchored to a particular hue.

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在具有轴对称特性电磁场的数值分析中，用矩形截面环单元分析具有比其他单元更多的优点。

In the numerical analysis of axially symmetry electromagnetic field, the finite element method using ring unit with rectangular cross-section has more advantages than other methods.

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