查询词典 osculating circle

Aiming at the disadvantages of the present machining method of the propeller,such as lower machining precision and efficiency,needing more time of clamping and limited machining scope,a new machining method — the second order osculating machining method has been presented and used in the manufacture of the propeller ...

针对目前螺旋桨加工中存在的加工精度和效率较低、需多次装夹、适用范围有限等缺点，在分析螺旋桨桨叶曲面特征的基础上，提出了基于圆柱形刀具二阶密切加工螺旋桨的方法。

Then, I make a demonstrative study on the Hi-tech parks in Shenzhen, Guangzhou and Zhongshan. From the analysis of their status in quo, I points out the problems and make suggestions correspondingly such as strengthening intellectual cultivation and promotion, osculating cooperations among industry, college, research and gov, setting up and perfecting venture capital mechanism, fostering new economy and so on.

在此基础上，本文对广东省发展较为典型的深圳高新区、广州高新区和中山火炬高新区进行了实证研究，分析其发展现状，指出其存在的问题与不足，并给出相应的政策建议如密切官产学研合作、强化人才培养与激励机制、建立完善风险投资机制、发展新经济等。

Through systematic conclusions of site selection methods and complicated analysis of site selection influence factors and index, based on the newest research results of sanitary landfill site selection both at home and abroad, this thesis discusses the elementary principles of multi-objectives decision osculating value method, matter element analysis method and multi-objectives decision fuzzy optimization method, builds an open site selection index system.

本论文通过对已有选址方法的系统总结，基于对卫生填埋场选址影响因素和指标的综合分析，在借鉴国内外有关卫生填埋场选址的最新研究成果的基础上，从理论上阐述了适用于铁路垃圾卫生填埋场选址的多目标决策密切值法、物元决策分析法以及多目标决策模糊优选法的基本原理，建立了一个开放性的选址指标体系。

Abundant water provides the base to develop tourism,but the quality of water is unknown.Based on the data of the year 2003,osculating method is used to assess the water quality of Dongchang Lake.The result shows that the water quality of 6 parts is good enough to develop tourism,and there's difference during the...

以2003年聊城市水质监测结果为据，用改进的密切值法对东昌湖水环境质量进行评价，分析各湖区水质相对优劣及其满足的水质标准，结果表明东昌湖满足IV类水质标准，适宜开发为直接与人体接触的旅游项目，6个湖区中，1#湖区水域面积较大，且水质最好，应优先开发。

Aiming at the disadvantages of the present machining method of the propeller, such as lower machining precision and efficiency, needing more time of clamping and limited machining scope, a new machining method the second-order osculating machining method has been presented and used in the manufacture of the propeller by analyzing the curve surface characteristics of the marine propeller blade.

针对目前螺旋桨加工中存在的加工精度和效率较低、需多次装夹、适用范围有限等缺点，在分析螺旋桨桨叶曲面特征的基础上，提出了基于圆柱形刀具二阶密切加工螺旋桨的方法。

According to the three deferent site selection methods, this thesis takes three transformations. The positive transformation (the numerical value larger, the result better) and the negative transformation (the numerical value smaller, the result better) are all included. A Matlab program is developed to predigest the osculating value method.

根据三种不同的铁路垃圾卫生填埋场选址方法，分别运用了三种不同的转化方法，对选址指标的正向和逆向进行不同的转化，开发出一个MatLab程序使得密切值法的运用更为简捷。

The osculating relation exists between rockfill fabric tensor and stress tensor, which have been proved theoretically in this paper. So creep mechanism and deformation law of rockfill can be gained from varying of fabric tensor. As a result creep mechanism of rockfill creep may be revealed from microcosmic view.

堆石体组构张量与应力张量和应变张量有密切的关系，从组构张量的变化可以导出堆石体的变形机理和规律，从而揭示堆石体材料流变变形的细观机理。

For the application of Mathematica in the differential geometry,this paper introduces how to processe the curve curvature and the torsion questions,the graphic expression of the curvature and the torsions,and draw curves by the curvature and the torsions. Curvature ; torsion ; solution curve ; osculating plane ; natural parameter ; natural equation

利用Mathematica，只要输入有关系统命令就可以得到期望的结果。1曲率和挠率及其图形意义假设R3上的曲线一般参数表示为r=r它的曲率和挠率计算公式是：κ=‖r′×r&‖‖r′‖3τ=‖r′×r‖我们知道，空间曲线r=r在一点(s=s0)邻近的近似方程为ξ=sη=120κs2ζ=160κ0τs3通过近似方程可以确定曲线在其基本三棱形的三个平面(即密切平面，法平面，从切平面)上的投

Try and see inside you mind,a wide open blue sky and a vast green plain far away.Breathe in as you circle your hands high above you head,then bendback a little.Breathe out as you circle your arms back down to your sides...

试着去感觉你的思想深处，遥远的广阔蓝色天空和辽阔的绿色大草原，将你的双手举过你的头吸气，然后向后仰一点，将你的手臂收回在你的两侧再吐气。

The addendum circle is shown in thick lines, and the dedendum circle in thin ones.

齿顶线画粗实线、齿根线画细实线，啮合区不画齿顶线和齿根线。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。