查询词典 regular algebraic surface

By learning this course, students should proficiently use algebraic methods to solve geometric problems and practical problems, and proficiently grasp the basic ideas and methods of vector algebra and geometric properties of spatial line, plane and quadratic surface.

通过本课程的学习使学生熟练掌握运用代数方法解决几何问题并应用于实际问题之中，并熟练掌握向量代数的基本思想和方法，同时使学生熟练掌握空间的直线、平面和二次曲面及其各种几何性质。

In bicuspid and tricuspid valve, ECs were round or ovary, the ECs of lower surface of these valves were more apparent polarity than that of upper surface of the valve. The ECs appeared rectangle and arrange in regular, in pectinate muscles of left and right atrium, In inferior vena cava, ECs looked like round, ovary or irregular shape, without apparent polarity but with a few short microvilli.

在二尖瓣与三尖瓣，细胞多呈圆形或卵圆形，其瓣膜下面的细胞排列较上面的细胞极性明显；在左、右心房的梳状肌，细胞多呈长方形，排列较规则；在下腔静脉，细胞呈圆形，卵圆形或不规则形，极性不明显，有少量低矮的微绒毛。

It was found that the relationship between the nonsmooth appearance of leaf surface and its wettability is very strong, and the shape and distribution of the non-smooth elements are the decisive factors. The surface with regular distribution of convex elements presents large contact angle, strong water repellence, and good self-clearing ability, and that of hairy non-smooth elements takes the nextplace.

试验结果表明，植物表面具有的非光滑形态与表面润湿能力的强弱有极大的关系，非光滑单元体的形状和分布是影响植物表面憎水性强弱的决定性因素；规律分布凸包形非光滑单元体的植物表面的憎水性强，脱附效果好；规律密布表皮毛形非光滑单元体次之。

The results show that whether the stiffness profiles are smoothly varying or layered, the fundamental mode dominates the surface wave field and the effective phase velocity approaches to the phase velocity of the mode in far field for the regular profiles. For the irregular profiles, the higher modes have a significant influence on the surface wave field. The intensity and the frequency range of the influence are related to variation of the profile stiffness.

结果显示，无论剖面刚度是缓变还是分层变化，对规则剖面，表面波场基阶模态占主导地位，远场表面波有效相速度与基阶模态相速度接近；对不规则剖面，表面波场中高阶模态影响较大，影响程度及频率范围与剖面刚度变化有关。

In this paper, the regular domain of traditional parametric surface is generalized to manifold, and a new method is proposed to construct smooth surface based on this domain manifold.

将传统参数曲面的规则定义域推广到一般的二维流形上，并基于定义域微分流形提出了一种新的光滑曲面构造方法。

The free-surface boundary conditions are satisfied on the free-moving surface exactly without any approximation or linearization. The governing equations and the boundary conditions on the time-dependent, physical domain are transformed onto a regular domain for numerical computations.

为於未知的自由液面边界上满足非线性边界条件，本模式利用座标转换，将非稳态且不规则物理区间的流场控制方程式与边界条件，映射至规则的计算区间，以进行数值解析。

But the theory of elastic-plastic constitutive is generally suitable for regular yield surface. It is not suitable for singular yield surface.

然而一般的弹塑性本构理论适用于正则屈服面，对于奇异屈服面的情况论述较少。

To analyze the effect of surface roughness on the journal bearing lubrication, three parameters such as amplitude, wavelength and duty cycle are used to specify characteristics of the regular transverse surface roughness.

为分析规则表面形貌对润滑效果的影响，采用粗糙峰幅值、波长和占空比三个参数描述规则条纹表面形貌的特征。

Objective:To study the feature and regular pattern of body surface ST potential mapping of patients with coronary heart diseasesconfirmed by coronary angiography and explore the diagnostic value of body surface ST potential mapping for CHD.

目的：研究经冠状动脉造影确诊冠心病患者体表电位ST标测的特征和变化规律，探讨其对CHD的诊断价值。

In this paper, firstly, the lubrication and wear-resisting mechanism of the surface with regular micro-structure is studied and the corresponding lubricated theory model is also developed. And then, use modified multi-grid method to solve the theory model, and cylinder wall surface micro geometry shape parameters are designed and optimized.

本文首先通过研究具有规则微观几何形貌表面的润滑、减磨机理，建立相应的缸套—活塞环摩擦副润滑理论数学模型，利用变异的多重网格法求解此数学模型，对缸套表面微观几何形貌设计参数进行优化匹配。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。