转动能级 meaning in English

rotational energy level
rotational level

The rotational levels of the ground vibrational level may be depopulated by radiation .
基态振动能级的各转动能级的粒子数可能因幅射而减少。
The smallest energy transitions are between rotational levels; the next smallest between vibrational levels .
在转动能级之间的能量跃迁最小，其次是振动能级之间的跃迁。
Raman spectroscopy ( rs ) is a kind of molecule scattering spectroscopy , which is characterized by the frequency excursion that caused by interactions of molecule and photon to show the information of molecule . the frequency excursion reflects the margin between some certain vibrational or rotational energy states
拉曼光谱是一种分子散射光谱，通过与分子相互作用的光子产生的表征分子振动或转动能级差的特征频移，来反映分子结构或成分的信息。
We then discuss the vibrational - rotational level transitions and the population rate equations for the laser . in addition , electron temperature , electron density and the mixtured gas temperature in the laser plasma are investigated in details . the third part is with regard to the optimal designs and the experiments of the lasers
在二氧化碳激光动力学机理的研究中，比较详细地讨论了二氧化碳激光动力学过程，给出了激光振动-转动能级跃迁及其速率方程、激光等离子体电子密度和电子温度，以及混合气体的气体温度