单原子的

To build this file system, an atomic updating algorithm and a mult－buffer coheront policy are presented. Based on time－stamp, using variable－size blocks of files, the atomic updating algorithm controls the modification operations on the replicated files.

所设计的分布式文件系统用来支持分布式全局进程调度，它具有如下特点：（1）既支持分布式单副本文件的管理、又支持分布式多副本文件的管理；（2）被访问的文件数据缓存在客户侧结点机；（3）文件互斥访问的粒度为变长访问块；（4）提供全局一致的文件命名空间和透明文件访问能力；（5）支持用户在系统中任一结点机注册；为实现本文件系统，笔者提出了原子更新算法和多缓存一致性策略。

Glyceraldehyde has a single asymm- etric carbon atom﹙the central one﹚ and so two stereoisomer﹙also called optical isomer﹚ are possible, that is two forms of glyceraldehyde, denoted as D- and L-glyceraldehyde, which are mirror images of each other

D-葡萄糖碳原子键合C-5的羟基和氢原子的位置与D-甘油醛相同称为D-型，同样L-型的甘油醛衍生出来的单糖称为L-型糖。

Chapter 5 covered the quantum chemistry study of the model molecule (410 atoms) of HupA- Acetylcolinesterase complex at HF/4-31G level with point charge model (1929 point charges) to simulate the environment effect on complex active site.

第五章：用HF/4-31G量子化学方法对单分子状态石杉碱甲、活化状态的石杉碱甲以及石杉碱甲-乙酰胆碱酯酶复合物的模型体系（410原子，1929个点电荷）进行了从头计算研究，指认了对于形成稳定复合物贡献最大的石杉碱甲分子的基团和酶的氨基酸残基，揭示了活性位点中水分子的重要作用。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

Applying the thermodynamic model, the temperature and the critical grain size of phase transformation can be predicted precisely for the nanocrystalline materials.

在应用界面膨胀模型和普适状态研究纳米晶界面热力学特性的基础上，发展了纳米晶整体材料热力学函数的计算模型，给出了以纳米晶界面上的原子分数作为权重的纳米晶体单相材料的焓、熵、自由能随界面过剩体积、温度以及晶粒尺寸发生变化的明确表达式。

Using a nonperturbative scattering theory developed by Guo,Aberg and Crasemann the angular distributions of electrons in above threshold ionization of Krypton atoms irridated by a bichromatic phase-controlled laser field of linear polarizations is studied. The bichromatic phase-controlled laser field is composed of a sequence of identical one-cycle laser pulses.

采用基于Guo， Aberg 和Crasemann发展的强激光场中的非微扰量子散射理论，研究了线偏振双色激光场中氪原子阈上电离的光电子角分布，双色激光场由一系列相同的单周期激光脉冲组成。

The first principle based on the density functional theory and the nonequilibrium Green's function method are adopted to research the electronic transmission of a zigzag single wall carbon tube with an implanted Li atom.

运用基于第一性原理的密度泛函理论的非平衡格林函数方法对Li原子嵌入后的zigzag型单壁碳纳米管的电子输运性质进行了研究。

The standard McLaren SLR (with 626 hp and 780 Nm of torque) has been restyled, resculpted here by the use of ultra-light carbon fiber materials which FAB-Design claims is as advanced as anything in use in Formula One or the aerospace industry today.

标准迈凯轮单镜反光（与626马力和780 Nm的扭矩）已经重新设计， resculpted这里使用超轻碳纤维材料的原子轰击设计索赔是先进的东西在使用的F1或航空工业今天。

However, for the collision processes in He target, a large discrepacy between the CTMC results and experimental measurement is found. As is well known, the microcanonical distributions of bounded electrons in CTMC method is quite different from quantal distributions, we modified the initial microcanonical distribution by using eleven different ionization thresholds of electron bounded in target. With modification, we calculated the collisional process of O~(3+) with He, and the total cross sections of all processess are calculated as a function of the incident energies. The agreement with experiments is improved by the modified distributions.

但由于靶电子的微正则分布与量子分布有很大不同，在计算离子与He靶碰撞时发现结果与实验差距很大，我们基于使用多个系统总能量U值，对初始电子的微正则分布进行了优化，使其更接近于量子力学的径向空间分布，然后计算了O~(3+)与氦原子随入射离子能量变化的各种反应过程截面，发现优化极大地提高了计算精度，特别是我们的模型对于描述单电子、双电子丢失过程非常成功。

The results show that the diffraction patterns for WS2 single phase were observed; the pronounced quantum size effect exists in S-W-S nano clusters, and it enhances the hybridization of different electronic shell obits and formed a closed hollow spherical structure without any dangling bond. In the lubricating process, such a system can maintain its chemical stability and decrease energy dissipation.

分析结果表明：XRD图样显示为WS2相单相；在S-W-S纳米簇团中存在显著的量子尺寸效应，该效应强化了硫原子电子壳层间的轨道杂化，使纳米级的WS2润滑晶体形成了1个没有悬键的、化学性能稳定的中空球体，在润滑过程中，这种结构可使体系保持较强的化学稳定性，能耗降低。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。