The keys appear to be slightly raised and rounded, almost bulbous, and have nicely contrasting orange labels on the numeric keys and the shift button.

pre按键突起而圆润，近似球面。数字和shift键通过漂亮的橙色于其它按键形成对比。

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With theoretical analysis and numeric calculation, it is found that the transverse nonlinear phase shift caused by the sample can be very well fitted by a Gaussian function.

经过理论分析和数值计算，发现样品对光束横截面上产生的非线性相移非常近似于高斯分布。

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