查询词典 W

By using first principles pseudopotential method and density functional theory, the effect of external electric field on the work function changes of Ag, Au and K adsorbed on W(001) surface has been studied.

基于局域密度泛函理论和第一性原理赝势法，计算了Ag ，Au ，K在W(0 0 1)表面上吸附时的功函数随外加电场的变化关系。

The microstructure and mechanical properties of as cast AZ91Nd magnesium alloys were studied by microstructure analysis, mechanical property testing and analysis of fracture surface, where w is

采用微观分析、机械性能测试及断口分析等方法研究了钕对AZ91Nd镁合金w(Nd=0， 0.1%， 0.3%， 0.5%， 1.0%， 1.5%的微观组织和机械性能的影响。

The present numerical results indicate that:(1) the ablation shape and depth sensitively depend on the laser shape, pulse duration time and power density;(2) with laser power density in order of 109 W/cm2, ablation surface keep in consistent with spot size.

数值结果表明：(1)激光的脉冲形状、脉宽和功率密度直接影响烧蚀的形状和深度；(2)激光功率密度在109 W/cm2量级烧蚀面近似为光斑大小。

In this study, the ZnO thin films were deposited onto Si (100) substrate by ratio frequency sputtering with various RF power at 50, 100, 150, 200, and 300 W and the surface morphologies, crystalline structural, and nanomechanical properties of ZnO thin films were examined.

本研究利用射频磁控式溅镀(RF-sputtering)法於矽(100)基材上沉积高品质氧化锌薄膜，在实验中改变溅镀功率(50、100、150、200、以及300 W)来观察其对氧化锌薄膜表面形貌、晶格结构、及奈米机械性质的影响。

By the attenuation of the scattering factor, UV reaching the Earth′s surface is 23.89 W·m-2 which contributes about 62.55% of surface UV.

华北地区受水汽因子和散射因子影响损失于大气中的UV分别为19.30、35.31 W·m-2，这一能量损失表现出明显的季节变化和地区差异。

Double glow plasma surface alloying technique ; surface W ; Mo ; Co alloying ; pure iron ; diffusion behavior

双层辉光离子渗金属技术； W、Mo、Co多元共渗；工业纯铁；扩散行为

Low surface loads [W/cm2]. Unlike the solutions with rod heating systems

processes；宽而轻的加热元件可以用非常低的表面负荷[W/cm2]加热工件。

When operated at 5 kPa gas pressured and CO2:N2:He=1:17:2 mixing ratio, the output of this laser was 225 W with 8% wall plug efficiency.

此激光器以CO2：N2：He=1：17：2的混合气比及5 kPa的氧压操作，输出225 W功率时能量转换效率8%。

Leb regarding the treatment of osteoporosis with electromagnetic field were built on the clinical studies of Basset, Brighton, Becker, Cruess, Janssen, Lengel, Rubin and Wallach, among which the cell cultivation study made by Rodermann, Bayreuther and Pfederer in 1985,that is the reaction of human skin and pulmonary collagen cells to certain electromagnetic field intensity and alternating density, exerted the biggest influence on Professor W.

Leb教授运用电磁场治疗骨质疏松的治疗计划与规则是建立在Basset，Brighton，Becker， Cruess， Janssen， Lengel， Rubin∫ Wallach 的临床研究基础之上的，其中 Rodemann， Bayreuther和Pfecderer于1985年开展的细胞培养研究，即人类皮肤、肺成胶原细胞对一定电磁场强度和交变密度的反应对W。

In this document is an illustration of the W-87 warhead.

其中有一幅w-87核弹头的插图。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。