从第二轮开始，他转入防御，倚靠伸缩绳来吸收对方的功击力。

From round two he went defensive, leaning on the slackened ropes to absorb blows.

youdao

功的定义是力和力的着力点沿力的方向移动的距离的乘积。

Work is defined as the product of a force and the distance through which its point of application moves in the direction of the force.

youdao

线积分的意义，就是这力所做的功。

The line integral was actually the work done by the force.

youdao

There are many kinds of work. There's electrical work, take the motor, you plug it into the wall, electricity makes the fan go around, that's electrical work. There's magnetic work.

我们复习一下大一,学过的功的概念：,物体在力的作用下，运动了一段距离。

麻省理工公开课 - 热力学与动力学课程节选

So, if you're doing physics, x2 work is the integral of force, dx, x1 to x2.

如果你正在干活，功就是力的积分，从x1，到。

麻省理工公开课 - 热力学与动力学课程节选