"We put our best foot forward tonight." "We couldn't put the puck in the net, but we are proud of ourselves.
VOA: standard.2010.02.26
They're both expansions. They'll both have net work done on the surroundings, but not the same amount, right.
是不同的,他们都是膨胀,都对外做功,但数量不同,对吧?
So if you have some charge in the nucleus, but you also have repulsion with another electron, the net attractive charge that a given electron going to feel is actually less than that total charge in the nucleus.
所以如果在原子核中,有一些电荷但是你也有来自,另一个电子的排斥力,那么一个给定电子的,吸引电荷感觉到的事实上,小于原子核中的总电荷。
So far this year, Boeing - has taken orders for 73 planes, but with cancellations of 66, the net order intake is only seven jets.
VOA: standard.2009.06.16
The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.
这分子是电中性的,但右边要带一点负电荷,而左边要带一点正电荷。
It's true the net force is 0, but it doesn't mean you can ignore it.
所受的合力是 0,但是并不意味着你可以忽略它
This is providing work that's being used in here, but if you take the whole outside of the surroundings and this whole thing is the system, no net work, these things cancel each other, and yet heat's going up.
如果把外面的全部当成环境,把这里的全部当成系统,那么就没有净的功,它们相互抵消了,热量向上传输,会发生什么?
This is incredibly important because,when you look at this number that we started out with,saying the benchmark was 9.9 but net of fees the managers on average only lost thirty basis points--or .3% -you'd say,well that's a game I don't mind playing.
这极其重要,因为当你看这些数字时,刚才说过基准收益是9.9%,但是主动管理型基金经理人的平均净利润,只落后了30个基点或者说0.3%,你可能会说这个游戏,我不介意玩一玩
But just go to cs50.net, click office hours and you'll see the Google Calendar with all of the office hours that are still happening tonight, as well as tomorrow and these are just an opportunity to chat, to ask questions one on one with the teaching fellows or course assistants or frankly just a way to hang out during brain break and work on projects and then see what some of your friends might be tackling themselves.
但是我要提醒大家去cs50,net网站看看,这里清清楚楚告诉你,什么时候该学习工作,当然也包括今晚的明天的,我们还有一个机会供,一个与研究生助教或课程辅导员交流的机会,更直白来说,是提供你们开小差的机会,看看你们周围哪些人,在开小差呢。
And there is this separation which is a balance of attractive forces because the chloride is net negative and the sodium is net positive, but both of them, regardless of net charge, have electrons.
这里有一个平衡,引力的平衡,由于氯离子带有负的净电荷,钠离子带有正的净电荷,但是它们两个,没有考虑净电荷,电子。
And by here, I mean it's net neutral, but the electron deficiency.
我的意思它是电中性的,只是有些缺电子。
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