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。
2
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.