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。

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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