迁移数

The good catalytic performances were obtained on those catalysts supported by SiO_2. With the increasing calcination temperature from 300℃to 700℃, Co_3O_4 particles augmented and sintered on the samples surface which contained 10 wt.% cobalt, the crystallite size of Co_3O_4 was aggrandized from 7.2 nm to 20.3 nm by inchmeal. On the other hand, the activation energy for the combustion reaction was increased linearly with the augment of average crystallite size of Co_3O_4, the TOF value on prepared catalyst was decreased with it. Thus, the catalytic combustion was a typical structure-sensitive reaction.

在钴含量为10 wt%的样品上，随着焙烧温度由300℃提高到700℃，钴物种出现迁移团聚甚至烧结，在XRD中测定的Co_3O_4晶粒尺寸由7.2 nm逐步增加至20.3 nm；另一方面，催化剂的燃烧活化能随样品上Co_3O_4晶粒的平均尺寸增加而呈现线形增加趋势，而单位时间内单位活性物种上的甲烷转换频数随着粒径增加而逐渐降低，这一现象证实了该反应属于典型的结构敏感反应。

Densities of glycine and L-serine in aqueous LiNO3, NaNO3 and KNO3 solutions have been measured at 298.15 K with an Anton Paar Model 55 densimeter. Apparent molar volumes, limiting partial molar volumes and transfer volumes have been calculated. Hydration numbers and volumetric interaction coefficients for amino acids were evaluated.

用Anton Paar DMA 55精密数字密度计测定了甘氨酸和L-丝氨酸在LiNO3， NaNO3和KNO3水溶液中的密度，计算了氨基酸的表观摩尔体积、极限偏摩尔体积、迁移偏摩尔体积、理论水化数和体积作用系数。

Densities of glycylglycine in sucrose-water mixed solvent have been measured at 288.15, 298.15 and 308.15 K by Anton Paar DMA55 vibrating-tube digital densimeter. The apparent molar volume VΦ, limiting partial molar volume , partial molar volumes of transfer Δtrs from water to sucrose-water mixed solvent and the hydration numbers Nh for glycylglycine have been calculated.

利用Anton Paar DMA55精密数字密度计测定了288.15， 298.15和308.15 K甘氨酰甘氨酸在蔗糖-水混合溶剂中的密度，计算了甘氨酰甘氨酸的表观摩尔体积VΦ和极限偏摩尔体积，得到了其由纯水溶剂转移至混合溶剂中的迁移偏摩尔体积Δtrs 和理论水化数Nh。

Maya civilization prosperous two millenniums, but to the 9th century, lived scatteredly the Maya person as if likely has received some kind of instruction as if by prior agreement, at the same time dozens of ancient city-states is abandoned, they gave up the fertile land, to remote mountain migration which went out of cultivation, about the Maya civilization interrupt's reason, is still until now unable to agree.

玛雅文明昌盛了二千年，但到公元9世纪，散居的玛雅人似乎象是不约而同地接到了某种指令，数十座古老的城邦同时被废弃，他们放弃了肥沃的土地，向荒芜的深山迁移，关于玛雅文明中断的原因，至今仍莫衷一是。

Beijing has also been resettling millions of Han in Xinjiang while moving Uighurs to other areas throughout China—where, the government says, they have better opportunities.

北京安置数百万汉族人到新疆的同时，也迁移维吾尔人到中国其他地区，政府说，在那里他们有更好的机会。

Researchers used cell-phone-like tracking devices, for example, to record the Arctic migration of narwhals, a whale with a long twisted tooth, and remotely operated submersible s to reach several kilometers down into the oceans to study delicate marine animals that are impossible to collect.

研究员们用一种类似于微型电话的探测器来追逐，比方说，可用来追踪有一个弯曲的大牙齿北极独角鲸的迁移。遥控潜水器到达数千米深的海底去研究那些微妙的不容易追踪的生物。

This model provides a unified mechanism to interpret hard-sphere, compacting cluster, free volume, cage, jamming behaviors, geometrical frustration, reptation, Ising model, breaking solid lattice, percolation, cooperative migration and orientation, critical entanglement chain length and structure rearrangements.

这个模型提供了一个统一的机理可解释：硬球、压缩集团、自由体积、jamming behaviors、 geometrical frustration、蛇行、Ising 模型、破缺固态格子、逾渗、合作迁移和取向、临界缠结链长度和重排结构的粒子数。

But perhaps it is the white-throated sparrow, a North American nocturnal migrant, that has the best skill, for it has recently been shown by Kenneth Able, at the State University of New York at Albany, that this species can use the polarization pattern of the early evening sky to set a bearing for the rest of the night's flying, even if thick fog descends.

可是也许技术最高超的还数一种颈部白色的麻雀──北美的一种夜行迁移鸟，因为最近纽约州大学奥尔巴分校的肯尼思。埃布尔证明，这类鸟能够利用飞行定下方向，哪怕是天降大雾。

Densities of glycine in glucose-water and sucrose-water mixed solvents have been measured to 298.15 K by an oscillating-tube densimeter. Apparent molar volumes, limiting partial molar volumes and number of hydration of glycine have been calculated. The transfer volumes from water to sugar-water mixtures have been obtained and discussed in terms of the structural hydration interaction model.

利用精密数字密度计测定了甘氨酸与不同组成葡萄糖-水、蔗糖、水混合溶剂构成的三元系溶液的密度，计算了甘氨酸的表观摩尔体积、极限偏摩尔体积和理论水化数，根据结构水合作用模型讨论了迁移偏摩尔体积的变化规律，并与乙二醇-水和丙三醇-水等多羟基体系作了比较。

In a no overlapping generation population with selection, mutation、migration and random drift under consideration, two mathematical models presented in this paper might describe change of frequencies of multiple alleles at a locus and population mean of metrical characters resp.

在假定无世代重叠，群体内存在选择、突变、迁移，且考虑漂变效应的情况下，本文所构建的两个数学模型可分别用来描述一个座位上多个主基因频率或数量性状群体均数的动态变化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。