查询词典 spherical

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

The elastic properties of syntactic foam s with coated hollow spherical inclusions have been studied by means of Mori and Tanaka's concept of average stress in the matrix and Eshelby's equivalent inclusion theories.

利用Mori＿Tanaka平均应力的概念和Eshelby等效夹杂的原理，研究了含涂层空心球复合泡沫塑料的弹性性质，从理论上导出了这类复合材料的有效模量预测公式·此外，基于这些理论公式，讨论了涂层厚度和泊松比变化对复合泡沫塑料有效模量性质的影响

The second advantage is that globose targe is the most sensitive to variety of coal powder concentration In the experiment, a testing piping system for coal powder and air two phase flow was built in laboratory. Experiment adopt disk target and spherical target two kinds of target.

将两组试验数据拟和得到的空气单相流关系式的斜率与两相流关系式的斜率进行比较，球形靶试验数据拟和公式的斜率较大，说明球形靶确实比圆片靶对两相流粒子浓度的反应灵敏度高。

The solutions of an infinite solid with spherical inclusion under tensile force at infinite are presented.

2利用Legendre级数展开的方法，给出了类位错模型下包含球形夹杂的无限大弹性体受拉伸作用的解。

Afterwards, using the spherical tensor form of many-electron atom Hamilton and the irreducible tensor theory, the relativistic and fine-structure energy correction to the non-relativistic energy of Boron-like atoms in the ground and the first excited states have been further investigated. A theoretically analytic way has been given as to the calculation of all the radial integrations and spin summations, which concern interactions such as orbit-orbit, spin-orbit, spin-spin and spin-other-orbit. Therefore, the whole process of calculating the many- electron atom energy structures has been explicitly revealed and the results are relatively precise and satisfactory.

在此基础上，利用多电子原子哈密顿算符的球张量形式和不可约张量理论，进一步研究了类硼离子基态和第一激发态非相对论能级的相对论修正和精细结构，给出了轨道-轨道、自旋-轨道、自旋-自旋、自旋-其它轨道等相互作用所涉及的所有角向积分和自旋求和的解析计算方法，清晰地展示了多电子原子结构计算的过程，得到了较为精确的理论计算结果。

In this paper,a water droplet motion model in thermal insulation countercurrent air flow is built based on the non-spherical particle drag coefficient,and the explicit formulation for terminal velocity is derived.

采用非球形颗粒的阻力系数关联式，建立了水滴在绝热逆流空气中的动力学方程，得出了水滴所受阻力及其最终沉降速度的计算方法。

First, different types of conducting materials chosen as raw materials are pressed into different form and different content terrazzo include graphite of 1000 meshes, graphite of 325 meshes, spherical graphite, carbon black, acetylene black and conductive Carbon Black, whose performances of analysis and comparison was made.

在实验过程中，通过选取不同类型的导电填料，制备了不同类型、不同含量的1000目石墨、325目石墨、球形石墨、普通碳黑、乙炔碳黑以及导电碳黑的抗静电地板，并对抗静电地板的性能作了分析和比较，最后选择了乙炔碳黑作为导电填料。

It is shown for the static and spherical black holes that thecutoffs are commonly expressed by the square of proper distance between thebrick-wall and the horizon.

结果表明，对于一般的静态球对称黑洞，截断因子的形式是一样的，都可以表示为与视界的固有距离的平方。

We carried out in-depth research on the spherical virus disease which was the largest threatener to abalone breeding , and achieved effective prevention measures.

通过对鲍鱼育苗过程研究，尤其是饵料筛选与培育，建立了安全育苗模式，明显提高了育苗成活率；调查了危害鲍鱼养殖和育苗过程中常见的病害，对危害性最大的球状病毒病进行了深入的研究，并提出了有效的防治措施。

Carried out in-depth research on the spherical virus disease which was the largest threatener to abalone breeding,and achieved effective prevention measures.

通过对鲍鱼育苗过程研究，尤其是饵料筛选与培育，建立了安全育苗模式，明显提高了育苗成活率；调查了危害鲍鱼养殖和育苗过程中常见的病害，对危害性最大的球状病毒病进行了深入的研究，并提出了有效的防治措施。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了