查询词典 complex surface

The results of the tests indicate that the spots where the fatigue short cracks initiated are at the bottom surface of the circle indention and some disfigurement places in that surface. The propagation paths of the cracks are very complex and the decentralization of the obtained data is very severe due to the micro organism of the material. While the distribution of the short fatigue cracks exist self-regularity on their length, angle, density and expansion rate of the cracks, which are less affected by the outer factors.

试验中观察到短裂纹形状多为Z型，试验结果表明疲劳短裂纹往往萌生于试样缺口底部表面和缺口表面缺陷处，其扩展复杂，路径曲折，数据分散性大，强烈地受材料微观组织的影响，疲劳短裂纹在长度、角度、密度和扩展速率方面虽数据分散但具有自身的规律，受外部因素的影响较小。

The results indicated that both weight and mechanical property of resins decreased by environmental complex fungouds,the weight losses of sheets of gels in 60d were 9.41%、20.65% and 18.60%,the deformation ratios of sheets of gels were 23.5%,25.1% and 26.4% respectively. Mono-germ and mono-fungus tests showed obvious growth of fungoids on the surface of SA/NaAA/AM and SA/NaAA/PVA gels,and slight growth on the surface of SA/NaAA gel.

研究结果发现，环境混合霉菌降低了海藻酸钠复合吸水树脂的质量和力学性能，60d试片失重率依次为9.41%、20.65%和18.60%，试片的破坏形变百分率下降依次是23.5%、25.1%和26.4%；单一细菌和真菌降解实验显示，菌群在含有AM和PVA的SA/AA/AM和SA/AA/PVA凝胶中呈现中度或深度生长状态，在SA/AA凝胶表面呈现轻度生长。

The judging speed is accelerated To assure generating correct tool paths in 3-axis NC machining, the processing plans of undercut and overcut situations for whole tool trajectories are discussed Sometimes certain of complex problems can be simplified using an approximating surface offset strategy presented The surface reconstruction technology in reverse engineering is studied deeply.

讨论了三轴数控加工球头铣刀关于整个刀轨路径的漏切与过切的检查和处理方法，保证最终生成正确的刀具路径。研究了曲面偏距问题，提出了一种曲面近似偏距新策略，在保证正确结果的前提下，将复杂问题简单化。深入研究了逆向工程中散乱数据点的曲面重构技术。

A recognition method of discrete points on trimmed surface is presented, which is based on the plane domain of surface parameter. The approach changes the recognition from the complex 3D space to the simple parameter plane artfully.

针对目前常用商业CAD系统在复杂参数曲面有效离散方面所存在的不足，结合实际工程设计与应用方面的需要，提出了一种基于二维参数域的裁剪曲面有效离散点的识别方法。

This paper has investigated the expression on rotational motion of earth's surface and Earth's deformation fields with complex vector surface spherical harmonic function, theoretical definition of the crust-fixed reference frames and the terrestrial reference system, and theoretical substantiating to the consistency between them.

徐州师范大学国土信息与测绘工程系，徐州 221116；2。中国科学院测量与地球物理研究所，武汉 430077摘要：本文研究了内核地球模型下的地球表面的旋转运动和地球形变场的复数矢量球函数表示，以及外壳固定参考架、地球参考系的理论定义和它们之间等价性的理论证明。

Superplasticity in a complex shape parts, the die surface of contact surface friction will limit further deformation region.

在复杂的超塑性零件的成形中，硬模表面的摩擦将限制接触面区域的进一步变形。

After analysing functions and basic theory of Surfacer and studying key technology of object reverse engineering of complex parts, author expatiates data capture, data processing and surface reconstruction and summarizes methods and steps of surface reconstruction.

本文通过对逆向工程软件Surfacer的功能和基本原理的分析，研究了复杂曲面实物逆向工程的关键技术，对逆向工程中的数据获取、数据处理和曲面重构技术进行了详细阐述，总结了Surfacer在曲面重构中的方法、步骤和技巧。

In tailrace tunnels of Baise Hydropower Station, a transient mixed free-surface-pressure flow may occur, which has a complex effect on the stability and transient of the power plant, so it is needed to build a reasonable and feasible mixed free-surface-pressure flow numerical model.

百色水电站运行时，尾水隧洞中有可能出现明满交替流动而使尾水系统对电站运行的稳定性和过渡过程都带来复杂的影响，因此建立合理可行的明满交替流动数值模型是完全必要的。

In this paper, according to the data format of surface in mechanics analysis software and based on computer aided geometric modeling, we present a novel intersection and trimming algorithm based on triangular discrete surface to realize the complex modeling of pneumatic membrane structure.

本文按照力学分析软件中曲面表示的数据格式，辅以计算机辅助几何造型的基础，提出了一种基于三角离散的曲面求交和裁减算法，实现了充气膜结构复杂外形的造型工作。

There are three features in the minibasins induced by gravitational sliding on the slope: the firstly, feature is surface of unconformity developed by onlap on minibasin margins or surface of unconformity truncated by mass transport-complex are sequence boundary in the study area; the secondly , accommodation of gravity flow is controlled by up lift rate and sedimentation rate , and styles of filling in the minibasins are dominated by the interrelationship between the two factors; and the third , there are two stacking patterns that consists of upward of turbidite fan-hemipelagic drape mud or mass-transport complexes-turbidite fan-hemipelagic drape mud.

认为在深水陆坡重力滑动作用所形成的微盆地内，层序边界表现为微盆地边缘上超不整合面或重力流对下伏地层的侵蚀不整合；逆冲构造隆升速率与沉积速率共同控制了重力流可容空间和沉积充填样式；沉积垂向演化以块状搬运复合体一浊积扇－深海披覆泥或浊积扇－深海披覆泥为特征。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐