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

如果不止一个力，在这个方向，你必须加上其他力，在这个方向的矢量，功就是，这些力所做的总和。

If there's more than one force in this direction, you have to add these forces in this direction vectorially, and then this is the work that the forces do together.

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 expansion work, for instance, or compression work, is if you have a piston with a gas in it. All right, you put a pressure on this piston here, and you compress the gas down. This is compression work.

力乘以距离，就是功，功有许多种：,电可以做功,驱动电机与电风扇,磁力也可以做功。

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