这是个等温膨胀过程。

So this is an isothermal expansion.

youdao

不可逆小于q可逆，q, irreversible, is, less, than, q, reversible。，换句话说，不可逆等温膨胀，从高温热源吸收的热量，少于可逆等温膨胀。

Q In other words, and irreversible isothermal expansion takes less heat from the hot reservoir than a reversible one does.

youdao

文章给出了等温变容循环反应器体积的精确计算方法，适用于任意膨胀率、任意循环比和任一级反应动力学系统。

In this paper, a precise method is derived to calculate the volumes of recycle reactors with variable volume. The present method is...

youdao

So that says the q1 is the opposite of w1.

这是等温膨胀。

麻省理工公开课 - 热力学与动力学课程节选

So this is an isothermal expansion.

这是个等温膨胀过程。

麻省理工公开课 - 热力学与动力学课程节选

And here, in an isothermal expansion, The bath is putting back the energy that the gas is expanding or using to expand, and so the energy is flowing back into the gas through the environment in the isothermal expansion.

而在等温膨胀中，恒温环境将气体膨胀对外做功,而损失的能量又返还回来，在等温膨胀中,能量从环境,流向系统。

麻省理工公开课 - 热力学与动力学课程节选