S100 protein genes differentially express in hyperplastic scar and keloid, which facilitate the differential diagnosis between the two.
S100蛋白基因成员在增生性瘢痕和瘢痕疙瘩中的差异表达有助于两者的鉴别诊断。
The differential equations that describe the artificial satellite motion are very complicated, and it is impossible to get the analytic express of solution.
描述人造卫星运动的微分方程非常复杂，不可能给出解的解析表达式。
Starting from the wave differential equation, a method is deduced to express the complex amplitude of light wave fields in the reference plane which is vertical to the optical axis.
在柱坐标下从微分波动方程出发，推导柱面光波的场分布，并利用远场近似条件导出当线光源与光轴成任意角度时，在垂直光轴方向的参考面上的复振幅表示。
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