light frequency

例句：

1. 1.The light frequency of the laser is very high.
   激光的光频率非常高。
2. 2.The scientists used a special device to measure the light frequency.
   科学家们使用一种特殊的设备来测量光频率。
3. 3. The light frequency affects the color of the objects we see.
   光频率影响我们看到的物体的颜色。