However, they also have much difference under the same macroscopic background, the subtle difference in source has a great effect on the later world.

然而在宏观的相同背景下也有很多微观的不同之处，这种源头上的细微差别对后世影响深远。

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The effect of O 2 flow rate on the background emission and some atomic and ionic lines in the new source is exploited in this paper.

本文主要探讨了屏蔽气氧气流量变化时对该新光源背景发射光谱及某些元素的原子线、离子线发射的影响。

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Now we can add a light source (I chose from the top right) for this image so later on we can have some dynamic light effect. To do this, go back to the background layer and duplicate it once more.

现在我们来为图片增加光源(我选的是右上方)，这样我们会有一些动感光线效果。

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