optical region

• 光学波段

optical region的用法和样例：

例句

1. The multi-band photometry monitorings also show that the common behavior in the optical band is that AGN become bluer when they brighten.
   多波段的相关性监测也表明活动星系核在光学波段的普遍情况是当它们变亮时会变蓝。
2. In this paper, using disk-instability model and starburst model, the AGN optical variability and spectral slope variability are simulated and confronted with observations.
   本文中我们利用盘不稳定模型和星爆模型的基本思想，模拟活动星系核在光学波段的光度和光谱斜率变化，并将模拟的结果和观测进行比较。