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？

麻省理工公开课 - 热力学与动力学课程节选

So if we add them all up, there should be no net charge on the molecule, if the molecule is neutral.

因此如果我们把它们都加起来，这个分子上应该没有净电荷，如果这个分子是中性的话。

麻省理工公开课 - 化学原理课程节选

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

For the course's website, help@cs net there'll be support forms and an email address, help@cs50.net, that you can turn to and frankly this is more a commentary on our lack of social lives during the term.

对于课程网站，我们有支持表格和邮箱地址，有什么问题可以求助去它,这更像是在评论我们的学习生活太缺乏社交活动。

哈佛公开课 - 计算机科学课程节选

So now that means if this is where the center of positive excess charge lies and on top of it is the center there is no displacement of the charge so there is no net dipole.

所以现在我们说,如果正电荷中心,就位于,那么还是在这里负电荷中心也在这里,所以没有空间偶极。

麻省理工公开课 - 固态化学导论课程节选

And during that time, a new kind of structure arose called news groups that is where computers on the net will be used to collect e-mails and keep them, so that other people might view a conversation conducted an e-mail, and this will be categorized by topics.

在那段时间里，一种新结构出现了,叫做“新群体“，它是连网的电脑用来,收集和保存电子邮件的地方，以便于,其他人可以查阅通过电子邮件进行的会话,它会以话题进行分类。

麻省理工公开课 - 媒体、教育、市场课程节选

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

耶鲁公开课 - 金融市场课程节选

scratch Scratch is a program that you can download for free cs50 net and you will see in problem set 0 0 which will be posted on CS50.nettonight under problem sets in both standard and hacker editions, can you do the--can you--it will walk you through the process of getting this software.

你可以免费下载,今天晚上我会在0,放上习套题,这个习题集有两个版本，习题集可以指导你,如何下载这个软件。

哈佛公开课 - 计算机科学课程节选

I am going to say if that electron is to stay in its orbit, that is to say it doesn't flee the atom, it doesn't collapse under the nucleus then the sum of the forces on the electron must be zero No net force. And so that will be the sum of a dynamic force plus an electrostatic.

如果电子会保持在它的轨道上运行,既不脱离原子的话，它就不会由于原子核对它的吸引力而被瓦解掉,电子所受的合力一定为零,由于没有合力,所以电子所受力为动态力和静电力的总和。

麻省理工公开课 - 固态化学导论课程节选

And so, I would be remised if I didn't draw your attention to the artwork that they've been working on at store.cs50.net.

因此，如果不能让你们对他们的作品引起注意,那我只能放弃了,在store。cs50。net上可以看到他们设计的作品。

哈佛公开课 - 计算机科学课程节选

We'll post an announcement to the course's homepage at CS50.net on the top with a link.

我们会在课程的主页CS50，net上,张贴一个通告。

哈佛公开课 - 计算机科学课程节选

So with problems at zero, ; which will be posted in two forms; PDF PDF for standard and PDF for hacker on cs50.net tonight, you will have the choice of implementing pretty much any scratch projects you can think of, and which subject to very few constraints.

对于问题集，我们提供了;,标准PDF以及可编程,今晚它们都会被放在CS50，net上，你可以选择任何,你想到的项目，范围不限。

哈佛公开课 - 计算机科学课程节选