查询词典 developable surface

This paper for the first time discusses the relations of the configuration, surface structure and surface properties of chrysotile asbestos with bio_activity based on nanometer-sized material and nanostructure effect.

本文首次从纳米材料与纳米效应角度出发讨论了纤蛇纹石石棉的形态、表面结构、表面性质与生物活性的关系。

It was seen that there were obvious epithelial changes caused by erosion such as cilium shedding, cell stripping and surface depression. In the meantime, there were mycoplasmas adhering to the epithalial surface or tips of remainder cilia.

扫描电镜观察，在接种MG的气管环上，见到明显的纤毛脱落、细胞剥离、粘膜面凹陷等上皮受侵蚀变化，同时见霉形体附着于光秃的上皮表面或残存纤毛的顶端。

Common Reflection Surface stack is a brand-new and special ZO imaging method, the theory of CRS stack stems from paraxial ray theory, the biggest difference between CRS stack and conventional ZO imaging method is that it consider a reflector R as a circular reflector segment Cr placed in the vinicity of reflector R, Cr can be seen as the second order approximation of the reflector. The CRS traveltime surface is the multi-coverage reflection response of the reflector mirror assigned to R.

共反射面元（CommonReflection Surface=CRS）叠加技术是一种全新的、特殊的零偏移距剖面成像方法，CRS迭加理论源于傍轴射线理论，它与普通的零偏移距剖面成像方法的最大区别是它认为地下反射层是由许多个小反射弧段互相叠合组成的，认为来自某反射点附近的一个邻域内的反射信息都可以对该反射点的成像作出贡献，因此对该反射点进行零偏移距成像时就应该聚焦更多的能量参与迭加。

On this basis, we circumstantiate material removal mechanism of colloidal SiO2 polishing LBO crystal and formation of super smooth surface, and study the relationship among pH of the slurry and material removal rate and surface roughness.

在此基础上，对胶体 SiO2抛光 LBO 晶体表面材料去除机理和超光滑表面的形成进行了详细的描述，研究抛光液的 pH 值与材料去除率和表面粗糙度的关系。

In the fully open or fully closed, the ball and valve seat sealing surface and the dielectric isolation, medium passed, will not cause the erosion of theAutomatic Control Valves valve sealing surface.

在全开或全闭时，球体和阀座的密封面与介质隔离，介质通过时，不会引起阀门密封面的侵蚀。

It gives a relationship between a surface integral over an oriented surface and a line integral along a simple closed curve .

它建立了有向曲面上的曲面积分与它的边界曲线积分的关系。

Using a perturbation method, these linearized equations are solved for a composite sphere with the charge densities of the rigid core surface and of the surface layer as the small perturbation parameters. Analytical expressions for the settling velocity and electrophoretic mobility of the composite sphere in closed form have been obtained from a balance among its hydrodynamic, electrostatic, and/or gravitational forces.

以复合粒子之固体核心表面的电荷密度和多孔性表面层内的固定电荷密度为二个微小扰动参数，应用正规微扰法来求解这些已线性化之主导方程式，再藉平衡作用於复合粒子的重力、静电力和流体阻力等三种力后，可得到带电球形复合粒子的沉降速度及电泳可动度的解析形式表示式。

A three-dimensional closed surface such that every point on the surface is equidistant from the center.

表面上每个点到中心的距离都相等的一种三维的闭合表面。

For the quartic blending surface , we study the part of which meets and forms a connected closed surface together with .

对于四次拼接曲面，我们感兴趣的是其联结三个管道曲面并且可与形成连通的封闭混合曲面的部分，我们称之为拼接曲面的"有效部分"。

Therefore, the border is a closed vertical surface dry surface, rather than a line on this for a very high to very high sky, deep deep down into the earth's crust.

因此，边界是一个垂直干地表的封闭面，而不是一条线，这个面向上到很高很高的天空，向下到很深很深的地壳。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样