amplitude density spectra 振幅密度谱
phase density spectra 相位密度谱
cross power spectra density 互功率谱
spectra density 谱密度
A method to determine the electron temperature and density from the time resolved spectra of hydrogen atoms left in a pulsed laser plasma is described.
本文讨论了一种利用残留在激光器中杂质氢原子的时间分辨光谱，来确定脉冲激光等离子体电子温度和电子密度的方法。
The novel Gd-containing sulfide glasses were investigated. Some glass properties including infrared spectra, microhardness, density and the curves of XRD and DSC were tested.
研究了新型含钆硫化物玻璃，测试了玻璃的红外透射光谱、显微硬度、密度等性能以及XRD ，DSC曲线。
Furthermore, the energy density spectrum for electromagnetic wave, Langmuir wave and ion acoustic wave are obtained and used to interpret spectra evolution with time.
研究了电磁波、朗缪尔波与离声波在相互作用中的能量密度谱随时间的演化；
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