youdao

youdao

youdao

If you take one of those individual grains of sodium chloride, look at it carefully, you will see the edges look like this.

如果你拿起,氯化钠晶体的一粒，仔细观察，你可以看到这样的棱角。

麻省理工公开课 - 固态化学导论课程节选

So this validates de Broglie and it also validates the whole concept of wave-particle duality.

这就证实了德布罗意的观点,也证实了,波粒二象性的原理。

麻省理工公开课 - 固态化学导论课程节选

Or you could ask the question, I have this restriction enzyme, at what regions on this plasmid will it cut?

你也可以这样问,我的这种限制性内切酶,会从质粒的哪个区域切开呢

耶鲁公开课 - 生物医学工程探索课程节选