• The leaders of ExxonMobil,Shell, ConocoPhillips and Chevron, as well as BP America, testified before a House of Representatives committee Tuesday.

    VOA: standard.2010.06.15

  • And he gave a very good analogy in saying, "It was almost as incredible as if you'd fired a 15 inch shell at a piece of tissue paper, and it came back and hit you."

    他还打过一个很好的比方:,“这就像是,你用个15英寸果壳,打到面巾纸上被弹回来打到你,一样不可思议,“

    麻省理工公开课 - 化学原理课程节选

  • Think of it as that egg shell part.

    我们可以。

    麻省理工公开课 - 化学原理课程节选

  • "The Gulf of Mexico response plans for ExxonMobil,Chevron, Conoco Phillips and Shell are virtually identical to BP's, and just as deficient."

    VOA: standard.2010.06.15

  • r And what that is the probability of finding an electron in some shell where we define the thickness as d r, some distance, r, from the nucleus.

    在某个位置为,厚度为dr的壳层内,找到原子,的概率,我们来考虑下我们这里所说的。

    麻省理工公开课 - 化学原理课程节选

  • a perfectly spherical shell dr at some distance, thickness, d r, dr we talk about it as 4 pi r squared d r, so we just multiply that by the probability density.

    在某个地方的完美球型壳层,厚度,我们把它叫做4πr平方,我们仅仅是把它,乘以概率密度。

    麻省理工公开课 - 化学原理课程节选

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