点粒子

Utilizing the symmetric property of the hyperbolic complex space-time, we may explain the correspondence relations of time inversions, energy inversions and complex conjugate transformations.

利用双曲复时空间的对称性，可以解释时间反演、能量反演与复共轭变换的对应关系，能够找出正、反粒子的时空对应点。

In this paper, the method of determining the net charge value of ions in ionic crystal is posed by solving the equivalent lattice Dirac equation.

提出了一种求解离子晶体等价格点的单粒子离子Dirac方程方法，确定离子晶体的点电荷电量。

In the theory of polymer solution, the impregnant is recognized as the continuous medium in the space.

格子模型的基本思想是高分子的粒子单元只能取空间某些规定的格点。

It can not only overcome the disadvantage of easily getting into the local extremum in the later evolution period,but also keep the rapidity of the previous period.

所提出的算法将粒子群优化算法和混沌算法相结合，既摆脱了算法搜索后期易陷入局部极值点的缺点，同时又保持了前期搜索的快速性。

A hybrid particle swarm optimization algorithm based on the chaos search is proposed. It can not only overcome the disadvantage of easily getting into the local extremum in the later evolution period, but also keep the rapidity of the previous period.

所提出的算法将粒子群优化算法和混沌算法相结合，既摆脱了算法搜索后期易陷入局部极值点的缺点，同时又保持了前期搜索的快速性。

Moreover,the flocculation settlement curves of the lignin locution were determined at deferent temperatures under the condition of the polyaluminum ferric chloride flocculation,the sense of the inflexion point of the curve was discussed,and the acaivation energy of the colloid solution flocculatiov was eltimated,which corresponds to the potential-energy between sol particles accordin.

用传统的化学动力学方法讨论了温度对絮凝过程的影响，测定了木质素溶液在不同温度时被聚氯化铝铁絮凝的絮凝沉降曲线，讨论了曲线上拐点的意义，并估算出该胶体溶液絮凝时的活化能，它相当于DLVO理论为胶体粒子间的势能能垒φm，实验得出φm≈16.5k

The function δ is introduced according to the property of the large forward scattering coefficient of the scattering particles in bad weather and the decomposition for phase function is normalized.

根据恶劣天气中散射粒子的前向散射系数大的特点，引入δ函数，将相函数进行归一化分解；把得到的简化点扩散函数作为大气的退化函数，与退化图像一起进行频域复原滤波。

These results indicate that it is easy for adatom to nucleate at defect site or near step.

这一结果说明在缺陷点附近吸附粒子比较容易凝聚。

During robot motion, the information from feature observations is fused with that from the odometry by particle filter, which improves the speed and accuracy of the localization effectively.

在机器人移动过程中，环境特征点的观测信息和里程计信息通过粒子滤波相融合，从而提高了机器人定位的速度和精度。

The micro mechanism considers that the inclusion in material, called micro defect crack, is the nucleus of internal crack initiation, interaction, between the stress field of the micro defect crack tip as loading and strain field of crystal lattice caused by crystal point passim (as vacancies or interstitial atom, H, O, N et al), will trap the point passim, and cause the enrichment of point passim around the micro defect crack.

其中疲劳裂纹内部萌生的核心是材料中的第二相粒子、夹杂物或微空洞，称为微裂纹；而微裂纹的长大是材料中间歇原子或空位等点缺陷在微裂纹尖端富集沉淀的过程，微裂纹的长大速率受到点缺陷富集扩散速率和疲劳载荷的双重影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。