Based on this foundation, basic models of plow-bottom surface are ruled surface and negative constant curvature surface.
据此得出直纹和负常曲率两类曲面可作为犁体曲面的基本模型。
The hyperbolic surface, which has so-called negative curvature because its surface curves up and down at the same time, like a saddle.
双曲曲面，即通常所称的负曲率，因为它的表面同时向上和向下弯曲，就像一个马鞍。
Curvature of the surface prevents slump block from becoming completely detached.
表面的曲率防止滑塌块完全脱离。
The shape of the detector must match the varying curvature of the image surface to accommodate continuously adjustable zoom, and this is easily done with this new hemispherical eye camera.
检测器的形状必须与图像表面改变的曲率匹配，以适应持续调整的变焦镜头的变化，而这，用这种新型的半球眼式相机可轻易做到。
The hyperbolic surface, which has so-called negative curvature because its surface curves up and down at the same time, like a saddle, just might represent the shape of the universe.
双曲表面，即通常所称的负曲率，因为它的表面曲线同时有的向上和有的向下，像一个马鞍，也许这样就可以代表宇宙的形状。
Space can have positive curvature, like the surface of a sphere, or negative curvature, like the surface of a saddle.
空间可以向球面一样有正的曲率，也可以像马鞍面一样有负的曲率。
A seventh extra anchor toward the ceiling, not physically connected, is added in order to maximize double curvature along the surface, and therefore embedding inherent stiffness.
第七个锚朝向天花板而没有物理连接，它的增加使得沿着表面的双曲率最大化，因而嵌入了内在刚度。
If the adjacent cell curvature difference, clarify in this range, the surface distortion is very serious, if cut and sew in here is cut off again, then divide membrane block has a great arc here will.
假如相邻单元曲率相差很大，阐明在这个方位，曲面歪曲的很严重，假如裁剪缝在此处不切断重新开始，那么裁剪膜块的鸿沟在此处就会有很大的弧形。
In order to achieve Class-A surface quality for primary and secondary surfaces, the surfaces must have G3 Curvature conditions in relation to each other.
在为了达到A级表面质量的小学和中学的表面，表面必须具有的G3曲率条件，在相互关系。
By focusing a circle of light on the cornea and measuring its reflection, it is possible to determine the exact curvature of the cornea's surface.
通过将一束圆形光圈聚焦在角膜上，测量反射过来的光线，就能得出角膜表面曲率的确切数据。
Medium and small tanks and surface curvature radius of curve or surface smaller irregular equipment, building the air duct insulation and dew and wall body sound-absorbing heat preservation.
小型储罐及表面曲率半径较小的弧面或表面不规则的设备、建筑空调管道保温防露和墙体的吸音保温。
The difference is due to the positive curvature of the surface.
不同之处就在于表面的正曲率。
The thesis tells surface analysis method including curvature analysis and curve depth analysis that we using in the skin restoring project.
介绍了我们所采用的一些曲面分析方法，包括曲面的曲率分析和曲面深度分析，并应用于颅骨面貌复原项目中的曲面造型。
Further study of the calculation basis of curvature coefficient for calculating the surface durability stress are made.
对齿轮齿面接触应力计算中曲率系数的计算依据作了进一步的研究。
Integral absolute mean curvature is introduced to describe average curving of an orientable closed surface.
引入积分绝对平均曲率来描述可定向闭曲面的平均弯曲程度。
The topic of this paper is to make an investigation on arithmetic for curvature lines of surface in CAGD.
本文的主题是对CAGD系统中所需的曲面曲率线的计算方法进行研究。
The line width of nanostructures is influenced by many factors such as tip curvature radius, detained time in the base surface, scanning speed, humidity, surface roughness etc.
尖端曲率半径、针尖在基底表面滞留时间、针尖扫描速度、空气湿度、表面粗糙度等均会影响纳米结构的线宽。
Since the existence of embedded rotation surface with given principal curvature function is well proofed, the design and modeling of the surface becomes possible.
由于给定主曲率函数的嵌入旋转曲面存在性已得到较好证明，故使得曲面的设计成为可能。
Based on study of relationship between the average quadric error and the surface curvature, a variable resolution surface reconstruction algorithm was proposed.
在研究平均二次误差与曲面曲率关系的基础上，提出了变分辨率的曲面重建算法。
The convergence of error brought about by the curvature of earth's surface obviously has no counterpart in free space.
地球表面曲率产生的误差是收敛的，显然，在自由空间没有类似的情况。
Because of small size, big curvature, it is very difficult to coat a layer metal on the surface of carbon nanotube.
因为碳纳米管尺寸小，曲率大，易缠结，要想在其表面进行化学镀比较困难。
In astigmatism, the surface of the cornea or lens has a somewhat different curvature in one direction than another.
在散光中，同一方向上，角膜和晶状体表面的曲率是不同的。
The influence of curvature radius of the front surface of cornea on the ablation depth and result for correction of myopia is analysed in detail.
详细分析了角膜前表面的曲率半径对近视眼消融深度和治疗结果的影响。
We have made certain that the reason of the splined spindle rapture is fatigue failure, its crack initiation lies in the minimal knuckle curvature radius surface region of the spline dedendum bottom.
初步确定了花键轴的断裂是疲劳断裂，裂纹源在花键齿根底部过渡圆角曲率半径最小的表面部位。
For surface reconstruction, the new adaptive extracting approach based on curvature of surface is developed so as to reconstruct the NURBS surface for the scattered data.
在曲面重构方面，提出基于曲面曲率的数据点自适应压缩方法，以实现对散乱点的NURBS曲面重构。
It might analyse the images Which were caught from the anterior surface of the cornea directly and calculate the radial curvature and refraction of the points on the anterior corneal surface.
该分析系统对所采集的角膜前表面光栅映像直接分析处理，计算出角膜前表面若干个点的曲率半径和屈光度。
The accuracy of free surface curvature evaluation has been improved by including more fluid cells in the calculation.
免费表面的曲率评估的精确度借由包括计算的较多液体电池已经被改良。
If the curvature of surface is changeful here and there, the maximum feedrate map must be established to determine the cutting directions.
对于曲率变化大的曲面，建立曲面的最优进给方向图，以确定最优走刀方向；
If the curvature of surface is changeful here and there, the maximum feedrate map must be established to determine the cutting directions.
对于曲率变化大的曲面，建立曲面的最优进给方向图，以确定最优走刀方向；
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