通常我们用符号s来表示弧长。
尤其是你怎么把弧长和时间联系起来？
Well, so in particular, how do you relate arc length and time?
接下来我想介绍一下弧长。
So, the next concept that I want to define is that of arc length.
我意思是弧长可正可负。
对速度做积分,告诉你车在轨道上走的弧长。
And, what it does is it actually integrates the speed of the time to give you the arc length along the trajectory of the car.
讨论参数曲线近似弧长参数化的数值方法。
In this paper, a numerical method is presented for nearly arc length parameterization of parametric curve.
应该试一下非线性分析，可能要用弧长控制法。
You should try a Nonlinear analysis, possibly with Arc length control method.
弧长太长会产生气孔及焊缝成形差等焊接缺陷。
On the contrary, it will create weld porosity and poor formation.
结构后屈曲分析传统上都是采用弧长控制法来处理。
Post buckling analysis was traditionally conducted by arc length method.
给出了在曲线生成、弧长求值及面积求值中的应用。
And an application to curve generation, curve length and curve bounded area is given.
简化了弧长参数化方法，以减少运动控制的计算量；
Quaternion interpolation method, which is a motion interpolation in motion simulation, was improved to increase the flexibility of curve control.
本文提出了参数曲线近似弧长参数化的一种插值方法。
This paper presents an interpolation methods for nearly arc length parameterization of parametric curves.
介绍了一种精确测量零件凸面弧长的较简便易行的方法。
A easy and feasible method to precisely measuring arc length on part's convexity is introduced in this paper.
同样地，这个距离，△r的模也不完全等于它跨过的弧长。
Similarly, this distance, the length of delta r is not exactly the length along the curve.
我不知道为何要用s来表示弧长，这只是一个常用的符号。
I'm not quite sure how you get an out of this, but it's the usual notation.
但同时也会使暴露在环境中的弧长增长，弧柱损失的能量增多。
But at the same time also can make exposed to the environment, arc arc length growth of increased energy loss column.
近似弧长参数化曲线在CAD和几何造型系统中有着重要的应用。
Nearly Arc Length parameterization curve palyes an important role in CAD and geometric modeling.
只要精确测知一段子午线弧长，便会很容易地计算出地球的周长。
As long as the precise sensing a meridian arc length, we can easily calculate the circumference of the earth.
并讨论了氩气流量、弧长和空心阴极内径对电弧伏安特性的影响。
The influence of argon flow, are length, the inner diameter of hollow cathode on the voltage - ampere characteristics are discussed.
中国云南头骨颧骨弧长、弦长、颧骨高及颧骨曲度小于华北头骨。
The height of the zygomatic bone of modern Europeans in smaller than that of Huabei skulls, but is similar as Yunnan's.
非线性方程采用位移引导或弧长引导的牛顿-拉夫森增量迭代法求解。
Newton Raphson method is used to solve the non linear equations piloted in displacements or in arc length.
模拟结果表明，在小弧长和高噪声的条件下，这种新的估计器性能优良。
Simulation results showed that under conditions of small arc length and high noise, which often occur in practice, the approximate maximum likelihood estimator performs well.
利用该数学模型模拟焊接电流、弧长和焊丝伸出长度随时间的变化规律。
It is based on the mathematical model of GMA welding system and Halmoy's wire melting model.
喷嘴高度：指喷嘴端面与切割表面的距离，它构成了整个弧长的一部分。
Five, the nozzle height: refers to the nozzle surface and cutting the distance from the end, it constitutes the part of the whole arc long.
根据子午线弧长的计算原理，推导出一个新的子午线弧长计算实用公式。
According to the principle of calculating meridional arc length, a novel practical formula is given in this paper.
而细分作为一个优秀的几何造型工具，在弧长约束方面的研究也未多涉及。
However, subdivision as an excellent tool was not used in fields of geometric restriction.
用长光栅测弧长来实现角度测量的高分辨率要求，实现空间上的高精度定位。
And line grating is used to measure arc length in order to increase Angle measuring precision, thus high differentiate locating in space can be realized.
在这种情况下，如果在来回运动，第一次增长的弧长更有意义，接着减少，再增长，诸如此类。
But, in this case, if you are moving back and forth, it would make more sense to have the arc length first increase, then decrease, increase again, and so on.
介绍了利用子午线弧长的直接算法来解算大地问题中截面椭圆弧长的一种直接解法。
The solution of arc length of sectional ellipse for geodetic problem, which is based on the direct algorithm of meridian arc length is introduced in this paper.
介绍了利用子午线弧长的直接算法来解算大地问题中截面椭圆弧长的一种直接解法。
The solution of arc length of sectional ellipse for geodetic problem, which is based on the direct algorithm of meridian arc length is introduced in this paper.
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