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- A momentum transfer of a moving three level atom interacting slantingly with a standing wave laser field is analysed. 分析了一个运动的三能级原子与一个驻波激光场在斜交相互作用时的动量传递行为。
- By using quantum method and decorrelation approximation, the twophotonbistability equation in three level atom medium is obtained. 用量子的方法,退关联近似,获得了三能级简并双光子双稳态方程。
- By using quantum method and decorrelation approximation, the twophoton bistability equation in three level atom medium is obtained. 用量子的方法,退关联近似,获得了三能级简并双光子双稳态方程。
- High order harmonic spectra in an intense laser field are obtained by salving the time dependent schrodinger equations with two level atom model.The results are agreement with experimental data. 利用两能级原子模型，通过直接求解含时薛定谔方程得到了强激光场中的高次谐波谱，和实验中观察到的谐波谱相似。
- There isn't an atom of truth in the rumour. 谣言中没有丝毫的真实性。
- Single mode field and two level atom 小弟找到了单模二能级
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- An efficient Sisyphus cooling and geometric cooling of three level atoms in blue detuned evanescent light wave are discussed, and the kinetics processes of atom cooling in a pyramidal and conical hollow trap is studied by Monte Carlo simulation. 讨论了三能级原子在消逝波光场作用下的Sisyphus冷却和几何冷却机制， 通过蒙特卡罗（Monte－Carlo）方法分别模拟了消逝波光场在方锥形势阱和圆锥形势阱两种情况下对原子冷却的动力学过程， 并计算了原子在不同的失谐量、激光功率及消逝波的判断宽度下的冷却情况。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- It is necessary that he be sent there at once. 有必要马上派他到那里去。
- As a matter of fact, I've never been there before. 事实上我从未到过那儿。
- A feasible scheme is presented for the teleportation of an unknown atomic state via far off resonant interaction of a degenerate V type three level atom with coherent state cavity field. 根据简并V型三能级原子与光场的远离共振相互作用系统的改进型有效哈密顿量,通过矩阵方法,推导出系统随时间演化的波函数,提出一种未知原子态的隐形传态方案。
- An anomalous character of reflectivity of resonance active medium is analysed theoretically based on the treatment of nonlinear optical susceptibility of two level atomic system. 基于二能级原子系统的极化率理论,对共振激活介质界面的反常反射特性作了理论分析。
- There was a steep climb on the road out of town. 市外公路上有一处很陡的上坡路。
- There are many spotlights on the stage. 舞台上有很多聚光灯。
- The paper deals with the application of some fundamentals of thermodynamics and stasistical physics to two-energy level atomic system and manages to discuss some relevant problems of absolute temperature and stimulated emission. 本文把热力学与统计物理学的一些基本原理应用到两能级原子系统;以试图论述负绝对温度与受激发射的有关问题.
- There has been an outbreak of typhoid. 那儿正爆发伤寒。
- There's not an atom of truth in what he said. 他所说的没有一点是真话。
