现在我真的很沉迷机械装置，但是你可以想象重物掉落的时候会带动桨轮旋转。

Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping weight can cause a paddlewheel to turn.

youdao

这是一个很简单的问题，通过观察重量是多少以及它下降了多远，来确定桨轮做了多少功。

It's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddlewheel.

youdao

好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。

So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.

youdao

So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.

好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。

麻省理工公开课 - 热力学与动力学课程节选

now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.

机械装置的时候,我真的很着迷，你可以想象,当重物掉落的时候会带动桨轮旋转。

麻省理工公开课 - 热力学与动力学课程节选

And this is in an isolated, in an adiabatic container.

这应该是个很简单的问题，桨轮处在一个与外界隔离额绝热环境中。

麻省理工公开课 - 热力学与动力学课程节选