radar constant

例句：

1. 1.The radar constant is a crucial factor in determining the range of a radar system.
   雷达常数是决定雷达系统射程的关键因素。
2. 2.The constants of the Earth's magnetic field are essential for understanding its influence on navigation.
   地球磁场的常数对于理解其对导航的影响至关重要。
3. 3. The constants of light, such as speed and wavelength, are fundamental to physics.
   光速和波长等光的常数是物理学的基础。