arc length

基本解释

Well, so in particular,how do you relate arc length and time?
尤其是你怎么把弧长和时间联系起来？
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.
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。
I mean, that would be sneaky-freaky, but you could have a negative arc length that gets 0 closer and closer to zero, and gets to zero at the end of a trajectory, or anything you want.
这也许有点怪怪的，但随着距离0点越来越近，可以得到负的弧长,在轨迹终点达到，或者你想去的地方。

He piggybacks this unit directly on top of a scope, allowing him to produce never-before-captured wide-field images, like his striking, ghostly picture of Barnard's Loop-a huge arc of gas that covers the length of the constellation Orion.
FORBES: A Star Is Born

弧长
The fuzzy arc length controller is established with arc voltage as the input and wire speed as the output, based on the MATLAB software.
本文以电弧电压为控制量,送丝速度为被控制量,采用MATLAB软件实现了双输入、单输出弧长模糊控制器的设计,并通过仿真对模糊控制中的比例因子和量化因子进行了优化。
电子、通信与自动控制技术
collocation积分法