Secondly, mathematical model of time-resolved carrier density has been established on the base of semiconductor rate equation theory.
然后基于半导体的速率方程理论，建立了载流子浓度随时间变化的数学模型。
Using rate equation theory, the equation group including the population inversion density of the gain medium, photon density and the absorber ground state population density is acquired.
利用速率方程理论，得到包含激光增益介质反转密度、光子密度和饱和吸收介质基态布居数密度的速率方程组。
This chapter introduced the theory of laser mode, the rate equation theory, the spatial distribution of the pump laser and the oscillating laser and the single frequency detection device.
本章分别介绍了激光器的模式理论、速率方程的理论、泵浦光和振荡光的空间分布以及对单频检测装置。
The rate equation theory researches the basic relation of the atomic spontaneous emission, stimulated emission and stimulated absorption, and it is the fundamental theoretical calculations.
速率方程表征的是原子的自发辐射、受激辐射和受激吸收几率的基本关系，是进行理论计算的根本；
Taking output laser power, slope efficiency as optimizing criterion, we achieve output optimal mirror transparency and pump lights parameters by numeric computing according to rate equation theory.
依据泵浦几何理论，以输出光功率，斜效率等为优化标准，通过数值计算得出了泵浦光束，输出镜透过率的最佳参数。
On the basis of distribution of radioactive elements and geological background, the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion.
根据放射性元素分布规律、地质背景及放射性元素衰变等，建立了计算氡析出率的理论公式。
Staring from the rate-equation theory , according to the field distribution function , some simple mathmatical simulations are made which meet the experiment better.
从速率方程出发，根据泵浦光和振荡光的场分布函数，进行了简单的数值模拟，模拟结果与实验结果能够较好的吻合。
When Q-switch and gain switch were applied the peak pulse power was increased and pulse width decreased. A comparison of experimental data with rate-equation theory was made, and agreed well.
利用增益开关和Q开关双机制作用，压窄了调q脉宽，提高了输出功率。用速率方程理论对过程计算，与实验结果较符合。
Generally, physicists derive steady-state degree distribution of networks by using the mean-field theory, master-equation and rate-equation approach, but their methods are not rigorous mathematically.
物理学家一般采用平均场方法、率方程方法和主方程方法研究网络的稳态度分布，但都不是严格证明。
Generally, physicists derive steady-state degree distribution of networks by using the mean-field theory, master-equation and rate-equation approach, but their methods are not rigorous mathematically.
物理学家一般采用平均场方法、率方程方法和主方程方法研究网络的稳态度分布，但都不是严格证明。
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