通常我们用符号s来表示弧长。

So, the usual notation that we will have is for arc length.

youdao

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?

youdao

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.

youdao

我意思是弧长可正可负。

I mean, arc length could be positive or negative.

youdao

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.

youdao

但电缆长，会减低其起弧穿孔和切割能力。

But cable long, can reduce the arcs perforation and cutting ability.

youdao

单个弧是不能求长的。

The individual arcs cannot be rectified.

youdao

本触发器是长弧氙灯的(必备)引燃设备。

This trigger is the necessary ignition device of xenon long-arc lamps.

youdao

本触发器是长弧氙灯的(必备)引燃设备。

This trigger is the necessary ignition device of xenon long-arc lamps.

youdao