Actually, maybe you want to say that the arc length increases and then decreases along the curve.

也许你会说，弧长在曲线上增长了，又减少了。

youdao

Therefore, the control of the stability of the arc length is meaningful for the welding quality and productivity.

因此控制焊接电弧弧长的稳定性，对保证焊接产品的质量和提高劳动生产率都有重要的意义。

youdao

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.

对速度做积分,告诉你车在轨道上走的弧长。

youdao

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