查询词典 surface area

If you have a surface with a different colour reflecting on the golden surface, this colour should be mixed into the reflected area, introducing more colours.

如果有一个不同于黄金表面颜色的反射颜色，这个颜色应该是混入反映面积，引进更多的色彩。

This method undertakes comparative getting the area between the spare parts to equation of geometry of the face in model of CAD of different spare parts above all - surface contact relation and type, use amount coming back theory general face - the face expresses to be helix; relative to instantaneous motion next, the helix that goes up to many surface contact undertakes making operation,; of helix of the motion when making the opposite very short time between the spare parts is final, according to the spare parts abut concern plan and abut spare parts move relatively helix, undertook an analysis to assembling instantaneous of whole of the spare parts in the model to concern with drive movably, give out not between the method of calculation of helix of opposite instantaneous motion between photograph adjacent spare parts and them but the judgement method of drive sex.

该方法首先对不同零件CAD模型中面几何方程进行比较得到零件之间的面-面接触关系和类型，并应用旋量理论将面-面相对瞬时运动表示为螺旋；然后，对多个面接触上的螺旋进行交运算，生成零件之间的相对瞬时运动螺旋；最后，根据零件邻接关系图和邻接零件相对运动螺旋，对装配模型中零件整体瞬时可动性和驱动关系进行了分析，给出不相邻零件之间的相对瞬时运动螺旋计算方法和它们之间可驱动性的判定方法。

The interpolate algorithms of three-order NURBS curve and double three-orders NURBS surface are presented. The expressions of partial derivative and normal curvature of NURBS surface are derived by the theory of differential geometry. The geometric characteristics of different curvature area of the free-form surfaces are analyzed in detail. All these work lays a theoretical foundation for constructing the cutter location calculating model of free-form surfaces NC machining. 2 On the basis of analyzing the methods of cutter path generation, the standard of evaluating the various methods of cutter path generation is presented. The method of generating cutter path with constant scallop height is presented for the first time.

本文以提高复杂曲面多坐标数控加工精度和加工效率为目的，在对国内外研究现状进行深入分析的基础上，对数控编程中各环节的关键技术问题进行了深入研究，主要内容包括以下几方面： 1 分析了复杂曲面各种造型方法的优缺点，给出了根据各种边界条件所确定自由曲面的NURBS表示方法以及三次NURBS曲线曲面反算算法；用微分几何理论推导了NURBS曲面的偏导矢及法曲率计算表达式；对曲面不同曲率特性区域的几何特征进行了深入分析，为建立复杂曲面的数控加工刀位计算模型奠定了理论基础。

In compressional area, physical modelling has been proved to be a powerful tool for simulating the evolution process of fold-thrust system, and gets great progress in nappe and double thrust structures, thrust belt inversion and basement involvement, compressional orogenesis function and surface process, structure transform zone in compressional area and mantle convection together with collision or subduction of plates etc.

在挤压地区，构造物理模拟已经被证明是一种模拟逆冲褶皱系统演化过程的强有力工具；在推覆体或双冲构造、冲断带的反转与基底卷入、挤压造山作用与表面过程、挤压地区构造转换带及地幔对流与板块碰撞俯冲等方面取得了很大进展。

In this paper, a model forwheel/rail with arbitrary profiles contacting in an arbitrary point is built to calculate contact area and contact surface stresses. Then bytakingthe calculated surface stresses as applied load, the stresses inside the railhead are calculated through the three dimensional elastic-plastic finite element method.

建立了一个任意形状钢轨和车轮在任意点接触时，接触面形状和接触面力的计算模型，然后把计算出的接触面力作为外载施加到三维弹塑性有限元模型中，进行轨头内部应力的计算，从而构成一个完整的计算方法。

The input method of multi-scale data and three levels data index are investigated, a new own idea about how to represent multi-scale seamless data is advanced. The viewpoints that seamless GIS is looked on surface of globe reference ellipsoid as spatial information positioning standard and looked on geographic coordinates as reference of spatial data storage are explored, and based on reference ellipsoid surface coordinate, the measurement model of distance, azimuth angle and area are given.(4) The flowchart of data production of seamless GIS is analyzed, on the basis of the program algorithm and the interactive processing of feature adjoining relation, the data production method of seamless GIS is discussed.

研究了无缝GIS多格式、多比例尺空间数据入库的模式，创新性地提出了用数据中间件模式解决GIS多源空间数据无缝集成的新方法，研究了多比例尺数据入库的方法和三级索引机制，并对无缝GIS数据的多尺度表示提出了自己的看法；阐述了无缝GIS以地球椭球面为空间信息定位的参考面、以地理坐标进行空间数据存储的观点，并给出了在椭球坐标系下的距离、方位角和面积度量模型。

The flow characteristics of surface singular point, seperation lines, re-adhesional lines, low speed back-flow area of the impeller and back-flow area at the impellor's inlet were revealed.

揭示了额定流量与小流量时叶轮的表面奇点、分离线、再附着线、低速回流区和进口回流等流动特征，进而提出了改进螺旋离心泵设计方法与结构的设想。

He then compared the two to make contact with the sliding surface relative to the surface of one of the imposition of a shear force to overcome molecules between gravity and cut the actual contact area generated by contact, causing friction .

然后，他比较了两个好联系与滑动面相对表面上的一个强加的剪切力，以克服分子之间的重力和切实际的接触面积，所产生的接触，造成摩擦。

Hyperspectral remote sensing data has the characteristic of combining both image data and spectral data into one data set, each pixel of a hyperspectral image an entire spectrum (consisting of numerous contiguous, narrow spectral bands) is present. Compared with conventional multi-spectral remote sensing data, hyperspectral remote sensing data can be more useful for the identification and classification of surface Materials. In this paper, the author classified the coastal area using hyperspectral remote sensing data, and further more, succeeded in extraction of sand beach surface information related to bearing capacity characteristic.

高光谱遥感数据具有图像—光谱合一的特点，与传统的多光谱遥感数据相比，能够更好的分类与识别各类地物，本文主要利用高光谱遥感数据，实现海岸带分类，并且在此基础上实现沙滩表面承载特性信息的提取，主要内容分为以下三个部分：第一部分概要介绍了高光谱遥感技术。

After 12 weeks,the result showed the operation area of group A articular surface was smooth,with the surrounding normal cartilage naturally straight flush, transparent form new cartilage tissue;Group B restoration surgery the basic integrity of the cartilage tissue,but the center of many not fully integrated,there is slight depression,surface wear,good subchondral bone formation;control group, depression joint operation areas,non-articular cartilage formation,such as lack of bone joints.

术后12周取材，A组修复区可见部分软骨样组织，关节软骨无磨损，修复的软骨呈白色半透明外观，与周围正常关节软骨有连续性，可见一明显的凹陷，无明显软骨下骨外露；B组修复区也可见部分软骨样组织，关节软骨在修复区可见磨损，软骨呈白色不透明外观，软骨下骨形成较好；空白对照组术区关节凹陷，无关节软骨组织形成，关节下骨缺如。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。