So, now if I divide both sides by delta t, I get this.

如果我两边同时除以△t，就会得到这个。

youdao

You should think of delta t as relatively small.

你要把△t看成很小的量。

youdao

The angular momentum change must be torque t times delta t.

角动量的改变就是,力乘以δ

youdao

And so they defined them, p after many experiments, the limit of this 0 delta T delta p and the limit of delta p goes to zero as the Joule-Thomson coefficient.

他们定义了这些量，以及它们的范围，ΔT比Δ,Δp的极限趋近于,叫做焦耳-汤姆逊系数。

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