Two-level systems under the action of a laser pulse train are studied by rotating-wave approximation.
本文采取旋波近似，分析了序列脉冲激光作用下的双能级系统。
We do not make the rotating-wave and markovian approximations on the interaction Hamiltonian and treat the environment as a non-markovian reservoir to the oscillators.
本文推导了三个全同的谐振子系统与一个非马尔可夫库相互作用时满足的非马尔可夫主方程，并在此基础上讨论了系统的三模纠缠和压缩。
A surface synthesis operator function is simply constructed by geometrically rotating a certain kernel synthesis operator, instead of complicated wave extrapolations.
该方法只需对某一核合成算子进行简单的几何旋转建立合成算子函数，避免了复杂的波场外推。
Under rotating wave approximation, the total coherent Hamiltonian of photon-phonon coupling system driven by incident field is introduced.
在旋转波近似下，得到在入射光驱动下光子-声子耦合体系的总的相干性哈密顿算符。
The method of tuning is rotating the wave-plate by the axial direction parallel to the optical axis.
调谐的方法是使石英波片绕平行于光轴的轴向转动。
The research result shows that with the designed pupil filter the axial focal shift can be controlled by rotating the half-wave plate.
研究结果表明，通过旋转半波片的角度可以实现焦移量的实时控制。
Vibration and traveling wave stress analysis of rotating bevel gears is performed using annular finite element.
提供了一种使用半解析环形棱柱有限元求解盘形锥齿轮行波振动的方法。
The interaction of a two-level atom with a thermal radiation field for single-photon processes and two-photon processes without rotating wave approximation is analysed.
两能级原子与外部环境(热库)相互作用时，采用非旋波近似，研究原子与热辐射场单光子和双光子作用过程。
There are many characteristic parameters in fuel pressure wave, and they can be used as fault diagnosis parameters of fuel supply system and rotating speed in diesel engine.
柴油机油压波形中包含了大量可作为供油系统故障诊断的特征参数和转速变化的信息。
A wave twin screw element was designed on the basis of meshing theory and motion relation for co-rotating twin screw extruder by introducing wave screw structure in this paper.
本课题根据啮合同向双螺杆啮合原理及螺杆运动关系，将波状螺杆结构应用到双螺杆挤出机中，设计了一种波状双螺杆元件。
A wave twin screw element was designed on the basis of meshing theory and motion relation for co-rotating twin screw extruder by introducing wave screw structure in this paper.
本课题根据啮合同向双螺杆啮合原理及螺杆运动关系，将波状螺杆结构应用到双螺杆挤出机中，设计了一种波状双螺杆元件。
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