It may eliminate the influence of the earth 's ellipticity .

可以消去地球椭率的影响。

Because of the ellipticity of the earth 's orbit the solar radiation incident on the earth is about 7 % greater in december than in june .

因为地球轨道是椭圆，入射到地球上的太阳辐射在12月份约比6月份多7％。

Evolution of a phase transition system is an important topic with many applications . The crucial difficulty lies in the instability of ellipticity .

相变系统随时间的演化过程是一个有着广泛应用背景的重要理论问题，其核心困难在于椭圆不稳定性.

Ultrashort laser pulse ; high-order-harmonic generation ( hhg ) ; attosecond pulse ; ellipticity time-gate ; optimal phase delay .

超短激光脉冲;高次谐波;阿秒脉冲;偏振时间门;位相延迟优化。

Finally , we discuss the cause of the phenomena and present a method to resolve the problem of variation of ellipticity by introducing defect in the structure .

最后分析了产生这一现象的原因并提出了解决偏振态变化这一问题的方法，即在材料中心处引入缺陷.