曲折光线法和解波动方程是分析平面光波导的基本方法。
The solving of wave equations and tortuous ray method are fundamental methods of analysing plane optical waveguiding.
微距法，即观察因恒星重力场所引起的光线扭曲。
The microlensing method, which looks for distortions in light caused by a star's gravitational field.
研究小组已经成功把这一方法运用到具有复杂光线效果和背景物的视频中。
The team successfully applied this method to video clips of scenes with various lighting and backgrounds.
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