two-level system

Further more, a detailed comparative study of two-level system and three-level system is conducted. The simulation results, three-phase current waveforms, the electromagnetic torque waveform are given.

并且与两电平系统从三相电流波形、电磁转矩波形进行了详细的对比分析，分析发现采用三电平变流器后，电流的谐波明显减少，更加接近正弦波，电磁转矩脉动得到改善。

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After that the two alliances might be subsumed into a new European security system...

从那以后，这两个联盟将可能会被纳入一个新的欧洲安全体系之中。

《柯林斯高阶英汉双解学习词典》

Based on the rate equations of two-level system, the solutions of spin-up and spin-down carrier populations are obtained under the condition of incompletely initial spin polarization photoinduced by elliptically polarized pump light.

基于二能级体系的速率方程，获得了椭圆偏振光泵浦注入非完全自旋极化初始条件下的自旋向上和向下载流子布居的解析解。

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By taking into account the light hole and heavy hole valence band structures and their combined density of states, the expression of saturation absorption is deduced from the imaginary part of the susceptibility, which is similar to the mode of inhomogeneous broadening of two-level system.

考虑了锗中轻、重空穴价带的能带结构并利用轻、重空穴价带的复合态密度，由电极化率的虚部推得类似于非均匀展宽两能级系统模型的饱和吸收具有的形式。

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American researchers have now leapfrogged the Japanese and are going to produce a digital system within a year or two.

美国研究人员现已乘日本人之东风赶超而上，将在一两年内研制出一套数字系统。

《柯林斯高阶英汉双解学习词典》

Considering the fact that multiple switching from normal to anomalous dispersion at multiple frequency regimes has some potential uses in quantum computation and quantum information, etc, we explore mainly the dispersion switching properties of a two-level system driven by the trichromatic field.

考虑到正负色散在多个不同频率区域上的多重转换在量子计算和量子信息等方面有着潜在的应用，在本文中我们集中研究了三色激发二能级系统的多重色散转换特性。

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The vector control software of 12-phase cycloconverter-fed synchronous motor system is designed according to the fully digital variable speed system, based on two-level DSP. The arithmetic of the digital PI regulator and digital control of exciting current are also provided.

根据双DSP两级控制的全数字十二相同步电动机交交变频调速系统的特点，设计了一套矢量控制软件，重点给出了数字PI调节器的算法和励磁整流的数字触发程序；

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With the time-dependent perturbation theory, the dynamics of a two-level system coupled to an Bose field is revisited.

从含时微扰论的角度出发，重新求解了与玻色场相耦合的两态系统的动力学。

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In order to accommodate to the scale of Adult Education, aiming at its trait of multi-campus, we developed the Network Management System to meet the needs of the two-level management of university and department.

为主动适应成教办学规模，针对多校区的特点，以满足校系两级管理的需要，韶关学院成教处开发了成教网络管理系统。

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CDS system adopts the technology of two-level Cache ( client side Cache and server Cache) to improve systematic performance.

CDS系统采用两级Cache（客户端Cache加服务器Cache）的技术来提高系统的性能。

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a two-tier system of management

两级管理制

《牛津高阶英汉双解词典》

Their system seems to combine the two ideals of strong government and proportional representation.

他们的体制似乎是强有力的政府和比例代表制的完美结合。

《柯林斯高阶英汉双解学习词典》

After that the two alliances might be subsumed into a new European security system

从那以后，这两个联盟将可能会被纳入一个新的欧洲安全体系之中。

柯林斯高阶英汉双解学习词典

On the relaxation effect of Stark splitted levels for a two-level system interacting with a symmetrical strong resonant bichromatic field

对称强双色共振场中弛豫效应对二能级系统斯塔克分裂的影响

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The discrete element method ( DEM ) model of two-level isolation system impacted by external force is developed.

提出了外力冲击的二级隔离系统的 DEM 模型.

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The optimal control of discrete bilinear system ( DBLS) with quadratic cost function is discussed. A two-level optimal algorithm is proposed.

讨论了具有二次型目标函数的离散双线性系统的最优控制问题，提出了一种两级最优控制算法，并证明了该算法的收敛性。

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In this paper, the phase-dependent resonance fluorescence spectrum of a two-level system in a trichromatic field is calculated by the quantum regression theorem, Fourier transform and matrix inversion method.

本文利用量子回归定理、傅立叶变换和矩阵求逆的方法研究了三色激发二能级系统的共振荧光谱的相位依赖性。

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