The bus uses a hybrid system that combines the hydrogen fuel cells with high power batteries.

VOA: special.2009.09.07

And, we'll talk about fuel cells later in the semester when we do the unit on redox reactions and electrochemistry.

这学期我们随后会讨论燃料电池,当我们讲到,关于氧化还原反应和电化学单元时。

麻省理工公开课 - 固态化学导论课程节选

So, people are talking about the use of hydrogen in fuel cells.

人们在讨论,如何把氢用在燃料电池中。

麻省理工公开课 - 固态化学导论课程节选

They discovered a drop in pressure in the fuel cells that supplied electricity.

VOA: special.2009.06.24

Then another problem developed with the same fuel cells.

VOA: special.2009.06.24

These fuel cells powered the communications and computer systems.

VOA: special.2009.06.24

But the fuel cells were producing too much water.

VOA: special.2009.06.24