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Then,by the Formula,we give calculation formulas of regular curves curvatures ,and discuss the general helices and flatness of curves in R~n,finally we prove a geometry inequality of curvatures and arc length.

本文按照R~3经典微分几何的研究思路，对R~n中的正则曲线作了初步探讨，我们首先从R~n中正则曲线的定义入手，然后介绍了正则曲线的自然参数表示和Frenet-Serret公式，接下来利用这一重要公式给出了R~n中正则曲线的各阶曲率的计算公式，讨论了R~n中的一般螺旋线和曲线的平坦性，我们还对R~n中的闭曲线证明了一个几何不等式。

This paper proves that Appell Hamel constraint 2+ 2=a 2b 2 2 is an integrable one, and that the path of the particle motion subjected to this constraint would be a general helix in n dimensional Riemannian space R n.

在ｎ维黎曼空间Ｒｎ中证明了Ａｐｐｅｌ－Ｈａｍｅｌ约束ｘ２＋ｙ２＝ａ２ｂ２ｚ２是可积微分约束，该约束作用下质点运动的轨迹是一般螺

The location precision on the error model of 2D generic curve in vector GIS;

矢量GIS平面一般曲线误差模型定位精度

The Geometric Properties of Cylindrical Helix in Minkowski 3-space;

三维Minkowski空间中一般螺线的几何性质

Generally Spiral Trajectory Curvature Center of Curvature and Torsion

一般螺线曲率中心轨迹的曲率与挠率

spheroidizing bright annealing furnace

一般线材、盘元、螺丝合金炖炉

Linear Independency of Hybrid Screw Group

混合螺旋系线性相关性的一般性判据

" Surface discontinuities of fasteners on bolts, screws and studs for general requirements"

GB/T5779.1-1986紧固件表面缺陷--螺栓、螺钉和螺柱--一般要求

Surface discontinuities of fasteners on nuts for general requirements

GB/T5779.2-1986紧固件表面缺陷--螺母--一般要求

Bolt load nominal to create initial seal.

一般情况下，螺栓负载产生初始密封。

cut a female screw thread with a tap.

用活栓切一条螺母线。

threadlike strands of glass fibre

线一般细的玻璃纤维.

Crossed the goal line with a flying leap.

飞一般跃过了终点线

general wire,wire rod,annealing furnace

一般线材、盘元、退火炉

Which way do you usually go to town?

你进城一般走哪条路线?

Generally, two screws are placed in the hub: one screw bears on the key and the other bears on the shaft.

一般在轮毂内装有两个螺钉，一个螺钉压在键上，另一个则压在轴上。

Helicobacter pylori bacteria can usually be treated with antibiotic medicines.

一般可用抗生素类药来对付幽门螺旋菌，

Dry screw air compressor for general use-Specifications

GB/T13278-1991一般用干螺杆空气压缩机技术条件

Research on Analgesic Effect and General Pharmacology of the Novel Conotoxin SO3;

新型芋螺毒素SO3的镇痛作用及一般药理学研究

Curve-intersecting Poly-line Approximation and Compression of General Curves;

一般曲线的相交折线逼近与数据压缩

The Stability of General Linear Methods for Nonlinear Multi-Delay Differential Equations;

非线性MDDEs一般线性方法的稳定性分析