查询词典 centered difference

Language skills and autonomous learning. this paper, on the basis of about two-year testing, has presented the experiment and analyzed the result in order to promote transformation from the teacher-centered teaching model to a student-centered one, which is pluralized, individualized and initialized.

在历经近两年实践的基础之上，本文总结和分析了试点的结果，以期推进大学英语教学由传统的以教师为中心的单一模式向以学生为中心的多元化、个性化、自主化教学模式方向发展。

Here centered the investor of all sorts of types, include private equity fund, fund, joint to rushing fund and medicinal powder door; Here is valuable the advocate of investment, also have round congenial public figure, a lot of people think a few dangerous characters can increase the risk of the market, but final result may be one centered the market of all sorts of type investor often is stabilize and not be the queasiest most, and the market also is the most accurate to the appraise value of the company.

这里集中了各种类型的投资者，包括私人股权基金、对冲基金、共同基金以及散户；这里有价值投资的拥护者，也有十足的投机人士，很多人认为一些危险人物会加大市场的风险，但是最后的结果可能是一个集中了各种类型投资者的市场往往是最稳定而不是最动荡的，而市场对公司的估值也是最准确的。

The revering to the nature of human being as a matter of fact means human-centered is nature-centered.

人对自然的敬畏其实是为了更好地以人为本，以自然为本就是以人为本。

Tungsten grain is one material that has high strength and body-centered cubic structure, and it distributes in the matrix that is soft and has the surface-centered cubic structure.

其中钨颗粒是强度较高的相，体心立方结构的钨颗粒均匀的分布于面心立方结构、较软的基体相当中。

On Earth's surface, iron comes in three flavors, standard crystalline forms known to scientists as body-centered cubic, face-centered cubic and hexagonal close-packed.

在地球的表面，铁以三种形式存在，就像身体一样科学家熟知的标准水晶线形态-空间立方体，平面立方体和紧贴一起的六边形。

In this paper we have calculated the surface energy of various crystalline planes as film surface for ten face-centered cubic metals, ten body-centered cubic metals and three diamond-structure crystals with Modified Embedded Atom Method.

本文应用改进嵌入原子法分别计算了十种面心立方金属、十种体心立方金属以及三种金刚石结构晶体的不同指数晶面作为表面时的表面能。

And comparison of their most stable surfaces with the body-centered cubic Fe shows that these carbide surfaces have lower surface energies than the most stable (110) surface of body-centered cubic Fe, indicating that the surface thermodynamics favor carburization at Fe surfaces.

另外，与面心立方铁最稳定表面(110)相比，Fe2C、Fe3C及Fe4C晶体最稳定表面具有较低的表面能，表明铁表面碳化在热力学上是有利的。

The results of simulations performed at nearly zero temperature demonstrate that stress-induced phase transitions from body-centered cubic to face-centered cubic and hexagonal close-packed structures take place during the deformation process of both Fe and Ta, and the maximum fraction of FCC atoms varies linearly with the tensile strength, from which we can conclude that a critical stress exists for the phase transition to take place.

低温模拟结果表明，纳米晶铁和钽在变形过程中都出现了应力诱导的相变，其中FCC结构含量的最大值和抗拉强度成线性关系，并由此可以推出相变发生的临界应力值。

Then, an ideal random-packed-sphere model with simple cubic, body-centered cubic and face-centered cubic structures is presented to predicate the specific protonic and electronic conductivities of the catalyst layers. A correlation equation of the specific conductivity is obtained and the model is validated by the good agreement between the calculations and the measured data.

然后，分别用简单立方、体心立方和面心立方三种自由堆积球结构首次建立了描述催化层有效质子和电子传导率的理论预测模型，分析了电解质本体电导率、球半径、接触系数和接触角对质子传导的影响，得出催化层有效质子和电子传导率的计算公式，模拟结果与实验数据吻合良好，证实了模型的有效性。

It is shown that the sphere-like body-centered cubic Eu2O3 and monoclinic Sm2O3 nanoparticles obtained with sodium dodecylsulfate as surfactant and the rod-like orthorhombic Eu2O3 and body-centered cubic Sm2O3 nanoparticles fabricated with polyvinylpyrrolidone as surfactant possessed a BET surface area of 44~49 and 34~37m^2/g, respectively.

结果表明，以十二烷基硫酸钠作表面活性剂所得产物为类球状体心立方晶相Eu2O3和单斜晶相Sm2O3纳米粒子，比表面积为44~49 平方公尺/g；而以聚乙烯吡咯烷酮作表面活性剂所得产物则是棒状正交晶相Eu2O3和体心立方晶相Sm2O3纳米粒子，比表面积为3437 平方公尺/g。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。