At last, the author obtained the equation of ray trace in the GRIN ball lens with the index profile which is quadratic and drew some important conclusions.
研究了二次抛物线型的GRIN球透镜的光线轨迹方程序；得出其轨迹为椭圆曲线及一些重要结论。
After rats were planted cotton ball subcutaneously, the administration of capsule of Xiexin Soup of Pinellia tuber can reduce the weight index of granuloma induced by cotton ball.
大鼠皮下植入棉球后给予半夏泻心汤胶囊可明显降低棉球肉芽肿的重量指数。
GRIN ball lens is a spherical optical element with refractive index is symmetric around a spherical point and varies in spherical radius direction.
梯度折射率球透镜是一种折射率以球心为对称中心，并沿球半径方向分布的球型光学元件。
The precision and performance index of ball screw unit determine the positioning accuracy and the resetting accuracy of nc machines, especially its lead error.
它的精度和各项性能直接影响数控机床的定位精度和重复定位精度，特别是滚珠丝杠的导程误差对机床定位精度的影响最为明显。
In Chapter 2, the refractive index distribution and ray trajectory of GRIN ball lens are studied in theory.
第二章主要从理论方面研究梯度折射率球透镜的折射率和光线轨迹。
In Chapter 2, the refractive index distribution and ray trajectory of GRIN ball lens are studied in theory.
第二章主要从理论方面研究梯度折射率球透镜的折射率和光线轨迹。
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