查询词典 surface active agent

In order to overcome this problem, in this paper, the surface electric current of the conducting sea surface and the first-order scattering from the conducting plate are obtained by employing Physic Optics method. The backscattering field of the time-dependant sea surface is calculated by using Kirchhoff Approximation. Meanwhile, taking the advantage of a newly developed technique that utilizes the reciprocity theorem, the difficulty in formulating the secondary scattered fields from the composite target is reduced. The dependences of the backscattered field on the parameters, such as the wind speed and the sizes of the plate are discussed.

为了克服这一问题，本文应用物理光学近似求解了导体海面表面电流及导体平板的一阶散射场，应用基尔霍夫近似给出了海面的后向散射场，同时借助互易性定理降低了求解平板和海面之间二次耦合散射场的难度，讨论了平板尺寸、风速等对后向复合散射场的影响。

We also discussed the difference of ideal surface and reconstruct surface and stability of surface.

探讨了理想表面和稳定表面的差别以及影响表面稳定性的因素。

During the simulation, surface current from primary electrode is computed. Taking rectangular triangle as the mesh unit, the integral formula of surface current can be simplified to a product of a difference expression and the surface area. So the computation complexity of FEM will be decreased and the time-cost will be cut down greatly.

在模拟过程中，需要计算主电极表面电流，通过选用直角三角形作为离散单元，将表面电流的二重积分表达式简化为一个差商表达式与主电极表面积的乘积，极大地降低了有限元分析的复杂度，减少了计算时间。

Chang'e-I is expected to fulfil four scientific objectives, including a three-dimensional survey of the Moon's surface, analysis of the abundance and distribution of elements on lunar surface, an investigation of the characteristics of lunar regolith and the powdery soil layer on the surface, and an exploration of the circumstance between the earth and the moon.

嫦娥预计完成四大科学目标，其中包括一个三维的调查研究月球的表面，并分析了丰度和元素分布对月球表面进行，调查结果的特点，月球regolith和粉状土壤层对地表，并探索的情况下，与地球和月亮。

It will fulfill four scientific objectives, including a three-dimensional survey of the Moon's surface, analysis of the abundance and distribution of elements on lunar surface, an investigation of the characteristics of lunar regolith and the powdery soil layer on the surface, and an exploration of the circumstance between the earth and the moon.

它在月球表面将履行四个科学宗旨，包括元素的月亮的表面、分析对丰盈和发行的一次三维勘测月球风化层的特征的调查和粉状土壤在表面和情况的探险分层堆积在地球和月亮之间。

If Phobos' surface is analogous with the surface of our own moon,"the bluer color could mean that the regolith is fresher, or hasn't been exposed to space as long as the rest of Phobos' surface has," Bridges said.

如果福波斯的表面与月球的表面类似，"蓝色可能意味着该地质层较新，或者没有福波斯其他地方暴露在空间中的时间长。"Bridges说道。

An illustration of the concept of burning surface regression is given in Figure 1, for a section of a hollow cylindrical grain, with an inhibited outer surface ("inhibited" means that the propellant surface is protected from the heat of combustion and as such, burning does not occur).

一个例子的概念，燃烧表面的回归，是由于在图1 ，对于第一个空心圆柱粮食，与一抑制外表面（"抑制"是指推进剂表面是保护从燃烧热和作为，例如，燃烧不会发生）。

The calculated results show that the relative stable Si-terminated surface has the lower surface energy than the Co-terminated surface.

结果表明表面能较低的Si终止表面比Co终止表面稳定。

The SEM analysis shows the nano-size roughness on the plasma treated or chemical surface modified wool scales.Wenzel equation and Cassie and Baxter equation are used to illustrate the relationship between surface roughness and contact angle,then to reveal the reasons why surface modifications are able to impart an improved water repellence and oil repellence and stain resistance to wool.

SEM研究结果表明，经低温等离子体表面改性或特定化学改性后的羊毛鳞片表面呈现纳米尺度的沟槽和凹凸结构，应用Wenzel公式和Cassie and Baxter公式阐述了表面粗糙度与接触角的关系，揭示了羊毛表面改性对于提高拒水拒油整理效果的原因所在。

To understand the effect of structure of riblet surface on properties of wall, the apparent contact angle of riblet surface was measured and drag reducing effect of riblet surface was confirmed by water-tunnel experiment.

为了得到脊状结构对壁面物性的影响，对脊状表面进行了疏水性测试，获得了液滴在脊状表面上的表观接触角，并通过水洞试验验证了脊状表面的减阻效果。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。