• "It is a very essential conversation, that Israel needs to conduct, among ourselves, of what is justified, what is necessary, what is legal and moral, and what even is effective in order to keep our citizens safe."

    VOA: standard.2009.09.09

  • z So, this is what we find the actual z effective is for an electron in the helium atom.

    所以这就是我们得到了实际有效的,对于一个氦原子的电子。

    麻省理工公开课 - 化学原理课程节选

  • This is more well-established question of nurture, in terms of moving away from the way we normally teach to what is clearly more effective way.

    这更是一种,培养方法问题,从我们平常的教学方法,转移到,明确的更有效的方法。

    麻省理工公开课 - 媒体、教育、市场课程节选

  • So far it has proven effective at preventing the disease in half of those vaccinated which is more than ever before.

    VOA: special.2009.12.07

  • In other words, only if we really are sure that the historicist act of reading is effective and works, if I know the meaning of a text. Well, fine.

    换言之,要是我们确定,阅读这个历史主义行为是有效的,有用的,如果我知道文本的意思,那么,很好。

    耶鲁公开课 - 文学理论导论课程节选

  • The vaccine has already proven effective at preventing the disease in half of those vaccinated which is more than ever before.

    VOA: special.2009.12.22

  • The first is this the z effective, or how much charge is actually in the nucleus that's felt, Z or the I guess we would say the z, how much the charge is on the nucleus that holds it close together.

    第一个是有效核电量,或者说实际感受到的核电荷量,又或者我想我可以说就是,使它们保持在一起的,原子核的电荷量。

    麻省理工公开课 - 化学原理课程节选

  • In the United States, the Armed Forces Radiobiology Research Institute is looking for more-effective treatments for radiation exposure.

    VOA: special.2011.03.30

  • Similarly,I believe that if we wish to prevent drug abuse in teenagers who grow up in a neighborhood that puts them at risk, the effective prevention is not remedial.

    同样,如果我们要防止,青少年受不良的社会环境影响,而滥用药物的情况,但预防的效果不佳。

    哈佛公开课 - 幸福课课程节选

  • He says there is clear evidence of the kinds of policies and programming interventions that can be most effective in combating the problem.

    VOA: special.2010.05.17

  • Part of the reason why I'm endorsing this market stability regulator is that there's no way we can set up a system that is both very effective in allocating resources and that is also very stable.

    我赞成市场稳定性监控者,的部分原因是,没有方法建立一个,既能完全有效配置资源有非常稳定,的系统。

    耶鲁公开课 - 金融市场课程节选

  • In fact, I think she is very effective in her job.

    VOA: special.2010.01.24

  • As a lot of research, especially in physics education, shows that this kind of pedagogy is more effective.

    因为很多研究表明,尤其是一些物理教学领域的,这种教学方法,会更有效。

    麻省理工公开课 - 媒体、教育、市场课程节选

  • On Earth,biological activity is very effective in making methane.

    VOA: special.2009.12.30

  • The z effective is lower, so we have to put less energy in to get an ion out.

    它的有效核电量更低,所以我们只需要更少的能量就能打出一个离子。

    麻省理工公开课 - 化学原理课程节选

  • "There is a degree of unanimity that there must be swift and effective action taken against the Taliban in Pakistan,".

    VOA: standard.2009.05.10

  • So again, when we check these, what we want to see is that our z effective falls in between the two extreme cases that we could envision for shielding.

    所以当我们再一次检查这些时,我们想看到的是,有效电荷量处于两种极端案例中,这两种极端案例。

    麻省理工公开课 - 化学原理课程节选

  • He says in the short term, the most effective way to combat piracy is with military force.

    VOA: standard.2009.10.30

  • z So in our first case, our first extreme case, would be that the z effective that is felt by electron number 1, is going to be plus 1.

    被1号电子感知到的有效的,是+1所以,我们所能做的是计算出,我们从这个。

    麻省理工公开课 - 化学原理课程节选

  • "It is impossible to maintain a safe and effective health-care system under conditions of siege that have been in place now since June 2007."

    VOA: standard.2010.06.01

  • The reason it's aluminum is because aluminum has a lower z effective, so it's not being pulled in as tightly by the nucleus, and if it's not being pulled in as tightly, you're going to have to put in less energy in order to ionize it, so that's why it's actually going to have the smaller ionization energy.

    原因是,铝的有效核电量更少,所以没有被原子核束缚得更紧,而如果没有被束缚得更紧,你为了电离它所需要注入的能量也就更少,这就是,它的电离能会更低的原因。

    麻省理工公开课 - 化学原理课程节选

  • So she says(In other words) while emergency contraception is effective for individual women, advance provision can't be expected to make a different in the community.

    VOA: standard.2010.03.22

  • What has been found over the last 10 years and a little bit longer is the most effective way of actually dealing with a rising levels of depression in our culture, with individual depression or anxiety is actually not to that is important as well.

    过去10年多时间的研究发现,处理我们不断增加的抑郁病例,个体的抑郁或焦虑,最有效方法是,这点也很重要。

    哈佛公开课 - 幸福课课程节选

  • Secretary Napolitano, a former governor and attorney general in the southwestern border state of Arizona, says prosecuting drug criminals is a more effective strategy than building border walls.

    VOA: standard.2009.03.24

  • And we know as we go across a row in the periodic table, what's happening is that z effective or the effective pull on the nucleus is increasing.

    而我们知道沿着周期表的某一行向右看,有效核电量,或者说原子核的有效引力是在逐渐增大的。

    麻省理工公开课 - 化学原理课程节选

  • Campbell says it is in the interest of the United States and Mexico to prevent criminal gangs from gaining effective control of Juarez or any other parts of Mexico.

    VOA: standard.2009.12.18

  • So it looks like not too many more than half of you got this correct, so make sure you can look at your periodic table and figure out how to think about ionization energy in terms of z effective, not just in terms of memorizing what that trend is.

    看起来只有一半多一点的人,做对了,所以请大家务必做到能够通过观察周期表,并在考虑电离能时,从有效核电量的观点出发,而不是仅仅依靠记住这个规律。

    麻省理工公开课 - 化学原理课程节选

  • Gates says he realizes there is a limited time to show the new policy is effective and he denied that U.S.and NATO forces are in danger of losing the conflict.

    VOA: standard.2009.09.03

  • z So the main idea here is z effective is not z, so don't try to plug one in for the other, they're absolutely different quantities in any case when we're not talking about a 1 electron atom.

    所以这里主要的观点是有效的z不同于,所以不要尝试将一个插入到另一个,当我们不在讨论1个电子的原子时,它们在任何情况下是绝对不同的量子数。

    麻省理工公开课 - 化学原理课程节选

  • And the point that I also want to make is the way that they differ, z effective actually differs from the total charge in the nucleus due to an idea called shielding.

    我也想指出的一点是它们不同的方式,有效的z事实上不同于原子核的,总电荷量,因为屏蔽效应。

    麻省理工公开课 - 化学原理课程节选

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