查询词典 developable surface

The threat of antiship missile against surface ships and the limitation of antimissile defensive systems of the surface ships being in service are analysed.

分析了反舰导弹对水面舰船构成的威胁和水面舰船现役反导防御系统的局限性，结果表明，现役舰载防御手段的反导能力有限，水面舰船面临着反舰导弹的严重威胁，迫切需要寻求新的防御手段和发展新的防御武器来增强其对付这种威胁的能力。

Moreover, the results of IR spectrum and apolar component of surface free energy showed that the alkyl chains of OTS tilted on the surface of PTW after the modification.

但是聚合物包裹为物理包裹，与PTW表面作用力弱；而硅烷偶联剂改性虽然可以有效改善粉体疏水性，但不能满足对粉体越来越高的疏水性要求[5]。

On single-side coated paper, coated surface than coated surface it becomes apparent that the expansion rate, so when single-side coated paper was drying is a non-coated sheet.

差单背涂布纸来说，否涂布背比涂布背的伸缩率澄辉不天不小，所以当单背涂布纸被潮潮时，不离会向否涂布背笔直。

Firstly part of quadratic term of Taylor series is chosen; a low-dimension surface is used to approximate limit state surface ; and the modified reliability formula is derived.

首次选取泰勒级数的部分二次项，用一个距原点最近点处拟合的超低维曲面近似极限状态面。

It has been widely used in recent years, for it not only preserves several advantages of B-spline surface, especially the affine- invariance, but also has some special advantages such as adaptability to arbitrary topology which parameter surface doesn't have.

它不仅具备B样条曲面仿射不变性等良好性质，还具有参数曲面所没有的任意拓扑适应性等特点，因而近年来得到了广泛的应用。

This technology not only preserves the properties of localness and affine-invariance of B-spline surface, but also has some special advantages such as adaptability to arbitrary topology which parameter surfaces dont have. These good qualities makes subdivision surface used widely in recent years.

它不仅具备B样条曲面的局部支承性、仿射不变性等良好性质，而且具有参数曲面所没有的任意拓扑适应性等特点，因而近年来得到广泛的应用。

The present invention provides a direct-type backlight having: a resin sealing member including at least one resin layer, which has a light reflecting section formed on the outermost surface of the resin sealing member; an optical semiconductor element sealed by the resin sealing member; and plural circular light scattering grooves formed concentrically on at least one surface of the resin layer, wherein an area of a circle in the center and an area among the respective concentric circles are substantially the same.

本发明提供了一种直下式背光，包括：树脂密封元件，其包含有至少一个树脂层，该树脂层具有形成在所述树脂密封元件最外表面上的光反射部分；由所述树脂密封元件密封的光学半导体元件；和以同心圆形式形成在所述树脂层至少一个表面上的多个圆形光散射凹槽，其中在中心的圆的面积与在各个同心圆之间的面积大致相等。

Computer simulation for the metal, silicon dioxide, gallium arsenide by the different thickness of surface plasma waves generated by analysis and comparison done by analysis of surface plasma waves to find the best angle and resonance absorption.

电脑模拟时针对金属、二氧化矽、砷化镓在不同厚度时所产生的表面电浆波做分析与比较，藉由分析表面电浆波找出共振角与最佳的吸收度。

Because the positron annihilation spectroscopy can directly show the information of the defects in the materials, we have measured the positron life of the gallium arsenide samples of different surface roughness. And we have discussed the effect of the surface topography on the positron life.

因为正电子湮没谱测量能直接给出缺陷的信息，我们用正电子寿命谱测量不同表面粗糙度的GaAs样品，讨论了表面形貌对常规正电子寿命测量结果的影响。

Based on measured surface topography in conjunction with theoretical analysis, the characteristics of surface during wear process are studied, and the asperity density and asperity curvature radius are given for the first time.

本文通过对缸套表面的实测和分析，研究了在磨损前后表面形貌的变化，并首次定量描述了微凸体密度、微凸体曲率半径及其沿高度方向的变化。

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