查询词典 particle accelerator

Cerium oxide has a wide range of uses, but many applications require special physics properties of particles. It is particle morphology, size, structure, dispersion, surface properties ,this physical and chemical properties, that determine their application field, but the traditional preparation process is difficult to control cerium oxide particle morphology and physical properties, thus making it difficult to meet the application requirements.

氧化铈有着广泛的用途，但很多方面的应用都要求其粒子具有特殊的物性，粒子的形貌、尺寸、结构、分散性、表面性能等物化性能决定其应用领域，但传统制备工艺难以控制氧化铈粒子的形貌及物性，从而难以满足应用的需求。

Regarding jargon: A charged particle is a particle that has charge.

关於术语：一个带电的粒子是一个带电荷的粒子。

At first sight, laser beams and charged particle beams do not seem well suited for particle acceleration.

乍看之下，雷射光束和带电粒子束似乎并不适用于粒子加速上。

When the sodium lauryl sulfate and p-octyl polyethylene glycol phenyl ether is used and its level in 3% and 6: 4 ratio, the polymerization process has the lowest coagulum and the highest monomer conversion. Higher reaction temperature and more level hydroxyl value lead to more coagulum, the latter also lead to larger particle size. The acid value has larger influence on viscosity and coagulum, there exist a best range. The emulsion particle size is larger for its hydrophilicity, most of its particles are connected together.

在含较高亲水单体的乳液聚合体系中，难以制得稳定的预乳化液，不能采用工业生产中常用的预乳化工艺，而只能采用混合单体直接滴加的方法；由于单体混合物的亲水亲油值较高，用阴离子型乳化剂十二烷基硫酸钠和非离子型乳化剂聚乙二醇辛基苯基醚混合，用量为单体总量的3％，且比例在6：4时，乳液聚合时具有最低的凝聚物含量和最高的单体转化率；乳液聚合反应温度升高，可以提高单体转化率，增加反应速度，但凝聚率相应提高；随着羟基单体含量的增加，聚合过程中凝聚率增加，聚合物乳胶粒平均直径增加；羧基单体有一个最佳的用量（2.6％），过高或过低凝聚率均提高；羧基含量对乳液的粘度有较大的影响，当羧基含量较低时，羧基含量增加，乳液粘度增加明显；含羟基乳液粒子由于含亲水基团较多，使得乳胶粒径增大，乳胶粒子大多数互相凝聚在一起，处于凝聚态。

Tested results and analysis show: seed condition has a significant effect on bulk density, a comparatively significant effect on drag coefficient, and little effect on particle density and restitution coefficient of rice seed; moisture content significantly affects bulk density, particle density and drag coefficient of coated rice seed; variety of seed has little effect on the properties of coated rice seed.

试验结果和分析表明：稻种状态对容积密度影响显著，对漂浮系数影响比较显著，对籽粒密度和恢复系数影响较小；含水率对包衣稻种的容积密度、业粒密度和漂浮系数影响显著；品种对包衣稻种的物理特性影响较小。

The hardness and wear resistance increase with increasing TiB2 content. Adding about 1.5%Mg in melt restrains the conglobation of the TiB2 particles, which makes the size of TiB2 particle decrease and the distribution of TiB2 particle is more homogeneous. The strengthening effect of TiB2 particles is enhanced and the hardness and wear resistance of composites are obviously improved. The excess Mg decreases the refinement effect of TiB2 particles, but the hardness and wear resistance are improved continuously.

结果表明：反应生成的TiB2颗粒平均尺寸约为0.5 μm，材料的硬度和耐磨性随着TiB2含量的增加而提高；添加1.5%Mg元素可明显细化TiB2颗粒，且使其分布更加均匀，增强TiB2颗粒的弥散强化和细晶强化效果，复合材料的硬度和耐磨性显著改善；过量的Mg元素(3%)会造成TiB2颗粒细化效果的下降，但其硬度和耐磨性能继续得到改善。

Computational algorithms of BEM for both multi connected domain and composites with particle of arbitrary geometry are derived.These BEM algorithms are used to calculate the temperature distributions for composites with both single-particle model and multi-particles models.

首先推导了多连域和含任意形状夹杂复合材料温度场问题的边界元计算格式，随后采用边界元法计算了具有不同形状和界面性能的单夹杂和多夹杂模型内的温度场。

Due to the most of particle size are smaller than critical particle diameter Dp at 1 nm CoPt, the effect of superparamagnetism causes the decrease of coercivity. Approximately, the orientation of magnetic easy axis of CoPt thin films is random.

当CoPt厚度为1 nm时，由於大部分的颗粒尺寸小於临界直径Dp，因此产生超顺磁效应，造成整体薄膜之矫顽磁力的下降，大致上，於700℃退火30分钟之CoPt单层薄膜的易磁化轴方向呈现random orientation。

At last,a optical engineering software is introduced to simulate optical scattering in the deep sea water ,and studys the corelation between scattering and relative refractive index,particle density and particle size in the sea water.

最后通过光学工程软件对海水中的散射进行仿真实验，研究散射与海水中粒子密度、粒子大小和相对折射率的关系。

Using the damping scaling theory of the free current in cosmism,it unitedly estimated that the mass and radius of the classical black hole, Planck particle ,nucleon,electron,particle of dark matter,and photon.

讨论了多成分宇宙中稳定粒子的基本性质，用宇宙演化中的自由流阻尼标度理论统一估算了经典黑洞、普朗克粒子、核子、电子、暗物质粒子、光子的质量和半径，量级与某些已知数据相符。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。