First, the lasing material is composed of atoms, or mixtures of atoms, that have a peculiar energy level structure.
英
美
- 首先,发射激光的材料由原子或有特定能级层的原子的混合物组成。
- 今日热词
-
- 深远海浮式风电平台 - deep-sea floating wind power platform
-
- 京雄高速公路 - Beijing-Xiongan expressway
-
- 农业及相关产业增加值 - the added value of agriculture and related industries