瓶子里的空气排除后就产生真空。

Exclusion of air creates a vacuum in the bottle.

《牛津词典》

风是由热空气上升产生真空而引起的空气流动。

Wind is a current of air caused by a vacuum caused by hot air rising.

《柯林斯英汉双解大词典》

这个实验说明，当气体在向真空膨胀的过程中，其温度没有升高。

The experiment said the gas didn't increase its temperature when it expanded the vacuum.

youdao

So, indeed, we are talking about a lot of void and a tiny little bit of extremely dense being.

事实上，更多的是许多真空,只有极小部分的高密度的物质。

麻省理工公开课 - 固态化学导论课程节选

This is titanium sponge that comes out of the bottom of this reactor, and it subsequently re-melted in a vacuum arc furnace.

海绵状的钛,从反应器的底部出来，随后在真空炉中重新熔炼。

麻省理工公开课 - 固态化学导论课程节选

And so an experiment said the gas didn't increase its temperature when it expanded the vacuum.

这个实验告诉你,气体在向真空膨胀的过程,中温度没有升高。

麻省理工公开课 - 热力学与动力学课程节选