So I need, well the pressure is constant, but there's a change in volume.

压强不变，体积变化。

youdao

If that changes, of course you know that the pressure in there is going to change at constant volume if the amount of gas in there is changing.

如果它发生了变化，当然在等体条件下，如果气体的总量，发生了变化，压强也会发生变化。

youdao

So now we have a constant volume reversible temperature change.

所以现在我们有一个， 等体，可逆的温度变化。

youdao

Using a home-made constant-volume oxygen-bomb combustion apparatus, the change of gas pressure with combustion time of coal samples in oxygen-bomb were investigated.

在自制的定容氧弹燃烧装置上， 测量了多种煤样在氧弹内燃烧期间气体压力随燃烧时间变化的关系。

youdao

Using a home-made constant-volume oxygen-bomb combustion apparatus, the change of gas pressure with combustion time of coal samples in oxygen-bomb were investigated.

在自制的定容氧弹燃烧装置上， 测量了多种煤样在氧弹内燃烧期间气体压力随燃烧时间变化的关系。

youdao