ray class field

例句：

1. 1. The ray class field is a crucial component in the design of spacecraft.
   射线类场是航天器设计中至关重要的组成部分。
2. 2. The radar class field is used to detect and track objects in the air.
   雷达类场用于探测和跟踪空中物体。
3. 3. The ray-like field has been found to have unique properties that make it useful for certain applications.
   射线类场被发现具有独特的性质，使其在某些应用中非常有用。