查询词典 osculating

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

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。