查询词典 coherent

For these states, I study the mean photon number distribution and their non-classical properties, which are photon antibunching, violations of Cauchy-Schwarz inequality and two-mode squeezing. Insection 4, I extend uncorrelated two-mode SU(1,1) coherent states to the multi-mode SU(1,1) coherent states.

对这些态，我们研究了平均光子数分布及其非经典特性，它们包括光子聚束，Cauchy-Schwarz不等式的违背和双模压缩。

Stamens 6-10, equal or alternately unequal in length, distinct, monadelphous, filaments coherent in phalanges, or filaments irregularly coherent.

雄蕊6-10，相等或交替不等长，离生，单体雄蕊，花丝在雄蕊束中连着，或花丝不规则连着。

The advantages ofthe method are both increasing the members of resolving coherent signals in ULA and solving the problems of direction finding in UCA to coherent signals.

该方法的优点是增大了直线阵分辨相干信号源的个数，解决了圆阵对相干信号的测向问题。

When a coherent light is scattered by the rough surface, the scatted light forms a granular intensity distribution known as speckle. Speckles are coherent superposition of the light scatted by the rough surface. Therefore, speckles carrier some information of the rough surface.

相干光从光学粗糙表面散射时，结果在探测面上出现随机的颗粒状的强度分布，称为散斑，散斑是由粗糙表面上各面元的散射光波之间的干涉在空间域内形成的，所以散斑也是粗糙表面一些信息的携带者。

Comparing with existing solutions, new method can utilize generators' speed signal measured by wide area measurement systems directly and detailed model and parameter of power system components were not needed. After sphering measurement-data, ICA with maximal negentropy criterion was carried out to obtain feature matrix. By this means high-dimension data of multi-machine perturbed trajectories were reduced to lower dimensions, and coherent generator groups were identified by pattern recognition consequently. Simulation results of 36-bus system with 8-generator and planning northwest China 750 kV power grid show that noise signals and bad data can be eliminated. This method is accurate in identifying coherent generator groups.

与现有方法相比，这种方法不需要获得系统元件模型和参数，而是直接球化广域测量系统(wide area measurement systems，WAMS)提供的发电机电角速度信号，再利用最大负熵准则进行独立分量分析得到特征矩阵，将高维数的多机受扰轨迹数据变换到低维空间，通过模式识别得到分群结果。8机36节点系统和西北750 kV电网规划系统算例表明，该方法能有效消除噪音和坏数据的影响，准确识别出同调机群。

The quantum entanglement in a system which is composed of two entangled atoms interacting with the squeezed coherent state is studied by means of the full quantum theory. The influences of the coherent amplitude factor, the squeezing factor, the ratio of two coupling coefficients on the entanglement property are discussed.

利用全量子理论，研究了双原子与压缩相干态光场相互作用系统的量子纠缠特性，分别讨论了相干态振幅参量、光场压缩参量和耦合系数比值对系统场熵和原子相对熵演化的影响。

With increasing coherent amplitude factor or decreasing squeezing factor of light, the time of two atoms stay in the steady entangled state become longer. The increase of the coherent amplitude factor or the decrease of squeezing factor of light will lead to the increase of atom-atom entanglement degree while the decrease of atoms-field entanglement degree.

随着相干态振幅参量增大或光场压缩参量减小，在一定时域内，两原子处于稳定的纠缠态，并且这个时域逐渐变长，同时原子-原子平均纠缠度值增大，而场-原子平均纠缠度值减小。

In this paper a new method is proposed in order to suppress the coherent interference. First, utilizing the interpolate method, the real array can be virtually shifted under coherent interference, several covariance matrice are gererated after the virtual shifting. By averaging the previous results, a new covariance matrix is obtained. It is a full rank matrix.

提出一种新的相干波束形成方法，利用内插变换对相干背景下的真实阵列进行虚拟平移，得到多个虚拟平移后的信号协方差矩阵；对其进行平均后，所得到的相干信号协方差矩阵具有满秩性。

According to RS model, radio radiation come from the coherent curvature radiation, and the coherent mechanism is the two-stream instability produced by that primary particles move through the second generation particle plasma.

根据RS模型，射电辐射来自于第二代粒子的相干曲率辐射，而相干机制则是原初粒子穿过第二代粒子组成的等离子体时形成的双流不稳定性。

In addition to the-coherent Stokes Raman scattering and CARS radiations, the second order coherent Stokes R...

除了观测到相干斯托克斯和CARS辐射，还观测到二级相干斯托克斯和相干反斯托克斯辐射。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。