• O'Connor says cost could be a factor in deciding to use this treatment.

    VOA: standard.2010.08.11

  • And I'll just point out here also, this is a conversion factor you'll use quite frequently -- many of you, quite on accident, will memorize it as you use it over and over again.

    你们会经常用到,所以你们可能,会不小心记住它的值,但我们并不会在,任何考试中。

    麻省理工公开课 - 化学原理课程节选

  • In addition to that, we have that epsilon nought value, remember that's the permittivity constant in a vacuum, and basically that is what we use as a conversion factor to get from units. We don't want namely coulombs to units, we want that will allow us to cancel out in this equation.

    这是电子的电荷,此外,我们有epsilon零,记住这是真空的介电常数,这是我们用来转换单位的转换常数,我们不想用库伦单位,我们希望这个可以在方程中约去它。

    麻省理工公开课 - 化学原理课程节选

  • Once I have it sorted I can search it in log n time, but that's still isn't as good as just doing n. And this led to this idea of amortization, which is I need to not only factor in the cost, but how am I going to use it?

    一旦对其完成排序,就可以在log,n的时间内对其完成搜索,但是这样做仍然不如n的复杂度,这样做引出了耗时分摊的想法,这时不仅需要考虑耗时的因素?

    麻省理工公开课 - 计算机科学及编程导论课程节选

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