查询词典 developable

Techniques for the geometric design of developable surfaces herein had all the characteristics of existing approaches for curves design.

讨论了所设计可展曲面的特点和几何构造，研究结果表明，所提出的设计方法具有现有曲线设计方法的特征，现有的对于曲线的一些几何构造技术可延伸到可展曲面的设计。

Face recognition is a biometric technology possessing great developable potential, researching on the face recognition technology has great theoretical and practical values.

人脸识别是一项极具有发展潜力的生物特征识别技术，研究人脸识别技术具有十分重要的理论和应用价值。

The cylinder, cone and of course the plane are all developable surfaces.

圆柱、圆锥以及平面都是可展面。

The government has been seeking for sustainable and developable way to stand against the flood risk for a long time. However, this problem is standing out more and more clearly with economy developing and society progressing.

如何在水灾风险中谋求生存和发展是政府长期以来关注的重要问题，随着经济的发展与社会的进步，这一问题将越来越突出。

But China s highway developable space isvery big and its road is very long, at the same time, research on managementpatterns of highway mechanical device is only primary.

但是，中国高速公路发展的空间还很大，要走的路还很长，有关高速公路机械设备管理模式的研究才刚刚起步。

It shows that some of the geometric construction algorithms that exist for curves can be also generalized to the design of developable surfaces.

基于将可展曲面作为平面单参数族包络面的思想，给出在B啨zier和B样条基下可展曲面的参数表示形式。

The officials offer a safe, fair and developable environment where the common people play their own roles as much as they like.

它们是由官员们提供一个适合发展，安全，公平的环境，让百姓在这一定的时空中，尽情发挥。

We prove that the two families of torsal surfaces of $T$ touch the second focal surface $S_2$ along the net of orthogonal parametric curves if and only if $S_1$ is developable.

证明了$T$的两个可展曲面族沿着第二个焦曲面$S_2$的正交曲线网相交的充要条件是$S_1$是可展曲面。

But the ruled surfaces in R^3 or R(superscript 3 subscript 1) have vanishing Gauss curvature if and only if they are developable.

这与低维情形绝然不同，在R^3或R(上标 3 下标 1)中只有当直纹面是可展时，高斯曲率才为0。

Metamorphics buried hill is the important prospective and developable layer in JZ oilfield.

变质岩潜山是辽东湾JZ区块重要的油气勘探开发层位。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。