With the increase of the gradient layer number, the effect of thermal stress mitigation is more obvious, but the trend becomes smooth.

随着梯度结构层数的增加，应力缓和效果增强，但增强的趋势由明显变为平缓。

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Tip: do not ever use a Gradient Layer for backgrounds, because when increasing the height of the canvas (a very common practice in web design) the background gets distorted.

提示：永远不要在背景上用渐变图层，因为当调整画布的高度时(网页设计时很常见的做法)，背景会被扭曲。

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Tip: do not ever use a Gradient Layer for backgrounds, because when increasing the height of the canvas (a very common practice in web design) the background gets distorted.

提示：永远不要在背景上用渐变图层，因为当调整画布的高度时(网页设计时很常见的做法)，背景会被扭曲。

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