paraxial ray

例句：

1. 1. The paraxial ray is a critical component in the design of optical systems.
   准轴向射线是光学系统设计中的关键组成部分。
2. 2. In the study of light propagation, the paraxial ray method is widely used to simplify complex calculations.
   在光传播研究中，准轴向射线方法被广泛使用来简化复杂的计算。
3. 3. The paraxial ray model is often used to predict the behavior of light waves in various materials.
   准轴向射线模型常用于预测光波在不同材料中的行为。