两者

The influences of the shock thickness and Alfven waves on the particle acceleration by diffusive shock waves are numerically studied through solving one-dimensional diffusive equation including the second-order Fermi effect. It is shown that the spectral index of the energetic particles strongly depends on the shock thickness. For example, the spectral index increases from 2.1 to 3.7 in the low energy range of 3-10 MeV and from 2.5 to 5.0 in the high energy range of 20-60 MeV as the thickness increases. The spectral index decreases from 4.3 to 3.1 as the particle injection energy increases. The spectral index decreases from 4.0 to 1.8 at the quasi-steady stage with the enhancement of the compression ratio from 2 to 4. The results indicate that under the influence of Alfven waves, the energetic particle spectrum at lower energy becomes flat and the spectral index decreases from 2.5 to 0.6 in the low energy range of 3-10 MeV and from 11.6 to 5.0 in the high energy range of 20-60 MeV. At the same time, the rollover energy reaches 19.6 MeV. The spectral index decreases from 5.8 to 2.9 as the energy density of Alfven waves increase. All these results are basically consistent with the theoretical models, as well as the observations of typical energetic particle events.

通过数值求解包含二阶费米加速的一维扩散方程，探讨在准平行激波条件下激波厚度和级联阿尔芬波对粒子加速的影响，研究粒子分布函数的演化与激波厚度和阿尔芬波强度的内禀关系，计算结果表明：(1)考虑激波厚度时，谱指数明显依赖于激波厚度，随着厚度从0.32增大到2.56，低能端(3-10MeV)谱指数逐渐从2.1增加到3.7，高能端(20-60MeV)谱指数从2.4增大到5.0，能谱逐渐变软；当初始注入粒子动量增大1.3倍，质子能谱指数从4.3减小到3.1，且与零厚度激波加速的谱指数差值缩小；厚度不变时，随着压缩比从2增加到4，准稳态分布时低能端(3-10MeV)粒子能谱指数逐渐从4.0减小到1.8谱变硬；(2)在级联阿尔芬波的影响下，随着时间的增大，粒子在低能处(3-10MeV)的谱指数从2.5减小到0.6高能端(20-60MeV)谱指数从11.6减小到5.0，能谱变硬，拐点能量值从7.5MeV增大到为19.6MeV；随着波的能量密度增大，谱指数从5.8减小到2.9，这表明阿尔芬波强度越大，加速效率越高，通过与激波厚度解析结果和高能粒子事件的观测能谱比较发现两者是一致的，说明数值模拟结果是可靠的。

Between the two, the engraver will be well equipped for background removal, sculpting and carving, and more.

在这两者之间的雕刻将具有完备的背景去除，雕塑，雕刻等。

A sensible balance between the two is necessary in order to enjoy life in its entirety.

两者之间的明智平衡是必要的，以便享受到生活的全部。

N-methylacetamide was used as entrainer in separating acetic acid from water with extractive distillation ,and the interaction mechanism in this process was studied by using the density functional theory.

文献[1-4]认为萃取精馏分离乙酸水溶液过程中萃取剂与乙酸之间的氢键作用改变了溶液中乙酸和水的活度系数关系，从而改变了两者之间的相对挥发度，使得水和乙酸的分离变得相对容易。

In this paper, the research on vignetting is done and a formula for vignetting about field angle、entrance window, entrance pupil and the distance between them is deduced.

文中对渐晕做了一些研究，并推导出一个渐晕关于视场角、入瞳、入射窗以及两者之间距离的解析式。

Illuminated in the soft lights of the deserted entresol, the two pyramids pointed at one another, their bodies perfectly aligned, their tips almost touching.

在已废弃的阁楼里微弱光线的照耀下，两个金字塔彼此相对，它们的塔身组成一条完美的直线，两者的顶部也几乎靠在了一起。

Is one of these entries an error?

这两者之一错了么？

Both the nature of the disease and treatment response affects life quality of epileptic patients.

疾病本质与药物疗效，两者皆会影响个案的生活品质。

In the side-to-side group, the lateral side of distally severed peroneal nerve trunk with removal of the epineurium was sutured to the tibial nerve trunk with removal of the same area of the epineurium.

侧-侧缝合组：将腓神经远侧断段侧壁去除外膜，同样胫神经侧壁去外膜，两者去除外膜的面积相当于腓神经直径的3倍。

Objective To evaluate the effect of treating epistaxis with radiofrequency and laser via endoscopies.

目的 分析鼻出血患者鼻内镜下射频和激光治疗的临床效果，对比两者的优缺点，探讨鼻出血的治疗方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。