飞机的燃料电池悬挂在左机翼上而氢罐悬挂在右机翼上。

The plane's fuel cell hangs from the left wing while the hydrogentank hangs from the right.

youdao

我想，你们可能认为第一主族，没有氢，而氢应该是最小的。

I mean, you would expect that the group one, absent hydrogen, would be the ones that would have the least.

youdao

而氢是水的重要组成元素，所以月球含水量相对较少也就理所当然了。

Since hydrogen is a key element of water, it stands to reason that the Moon possesses relatively little water.

youdao

I mean, you would expect that the group one, absent hydrogen, would be the ones that would have the least.

我想，你们可能认为第一主族，没有氢，而氢应该是最小的。

麻省理工公开课 - 固态化学导论课程节选

So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.

比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。

麻省理工公开课 - 化学原理课程节选