分布 distribute; spread; scatter; distribution 人口分布 population distribution; 分布在全国各地 be distributed throughout the country; 彝族主要分布在云南、 四川和贵州三省。 the yi nationality is distributed mainly over yunnan, sichuan and guizhou provinces. 有些种类的植物分布得很广。 some types of plants are widely distributed.; 分布不均 maldistribution
Furthermore , the mean algorithm is not sensitive to the spread angle and has a better performance 此外,均值法对分布角不敏感,且性能较优。
The influences of the intensity of the field , the atomic distribution angle and the dissipation constant on the linear entropy of the field are investigated 讨论了光场强度、原子分布角和耗散系数对光场线性熵的影响。
Simulation results demonstrate that when snr is high and spread angle is not big , the central frequency algorithm and the median algorithm are almost identical ; while when snr is low , the median algorithm outperforms the central frequency 仿真结果表明,在高信噪比和分布角不大时,中频法和中值法的性能几利相同;但在低信噪比时,中值法优于中频法。
With the dissipation approximation , the results show that if the dissipation constant is considerably small , the influence of the environment on the coherence of the field can be ignored ; the larger the field ' s intensity is , the weaker the entanglement between the field and the atom , and the larger the degree of the mixture for the field ; the more the atomic distribution angle tends to tr / 2 , the larger the mixture degree of the field is , while the stronger the entanglement between the field and the atom 在耗散近似下,结果显示:如果耗散系数k足够小,则光腔对光场相干性的影响可以忽略;场强越大,光场与原子之间的纠缠越弱,场可达到的最大混合度越大;原子分布角越趋向/ 2 ,场的混合度越大,而场与原子之间的纠缠越强。 nnewdy力amicspr明州娜毓协月
The results show that the number of the squeezed atomic dipoles is decided by the coherence of the atom , the direction of the quantum information entropy squeezing is decided by the phases of the field and the atom , and the quantum information entropy squeezing is a precision tool for the squeezing of the atom , especially when the atom is in the eigenstates of the dipole operators 结果表明:原子偶极矩分量出现信息熵压缩的数目依赖于原子的分布角;信息熵压缩的方向由原子和场的位相决定;量子信息熵是原子压缩的精密量度工具,尤其适合于原子处在偶极矩算符的本征态时压缩情况的描述。