根据包裹内容会提供免费加固包装服务。支持支付宝充值。有积分系统可以抵。
Provide free reinforcement packaging services according to the package content. Support Alipay recharge. There are points system can be arrived at.
有了这个应用程序，孩子们可以通过做家务获得积分和在线礼物。
With the Chore Monster app, kids can get points and online gifts by doing chores.
在平面上的线积分中，有两个变量，可以通过了解曲线的形成规律，从而去掉一个变量。
In the line integral in the plane, you had two variables that you reduced to one by figuring out what the curve was.
无论如何，再说一次，从概念上说有三个不同种类的积分。
OK, so anyway, again, conceptually, we have, really, three different kinds of integrals.
有了KPHONE，你还可以赢取没多大意义的积分，我们称之为kayak美元。
With the KPHONE, you can also earn meaningless points - we call them KAYAK Dollars.
就我这一方面而言，我获得三站冠军，六次杆位和相同的最快圈速。相对我去年的积分有提升。
For my part, I won three RACES and took six pole positions and the same number of race fastest laps, improving on my points score from last year.
如果旋度在原点有定义，你就可以试试了，计算二重积分。
So, if a curl was well defined at the origin, you would try to, then, take the double integral.
有两种选择，当你要建立通量的积分时,就必须取定曲面的正向。
There are two choices. Basically, whenever you want to set up a flux integral you have to choose one side of the surface.
面试就像一场博弈游戏——对弈的两人有相同的出发点，谁的积分最高谁就是冠军。
Interviewing is like a board game-competing players all have the same starting point and the winner is the player who accumulates the most points along the way.
这就是问题所在，如果你想积分，我们需要它处处有定义，旋度是0，那么你的积分也是。
OK, so that's the problem. I mean, if you try to integrate, we've said everywhere where it's defined, 0 the curl is zero. So, what you would be integrating would be zero.
关于在xy坐标系里建立二重积分有问题吗？
OK, any questions about how to set up double integrals in xy coordinates?
有一个和散度定理很像的东西，当然，对于通量和div,f的二重积分，都可以使用类似的理论。
There is a similar thing with the divergence theorem, of course, with flux and double integral of div f, you can apply exactly the same argument.
平面中的通量和空间中的通量有很大区别，在平面中，通量仅仅是线积分的另一种形式，而在空间中，它表现为曲面积分。
Flux looks quite different in the plane and in space because, in the plane, it is just another kind of line integral, while in space it is a surface integral.
所有的这些都跟一个变量有关，也就可以来做单变量积分了，有问题么？
You express everything in terms of a single variable and then you do a usual single integral. Any questions about that?
有一天晚上詹尼佛在写微积分作业，阿曼达则是上网聊天。
One night, Amanda was chatting on the Internet while Jennifer did her calculus homework.
像英国和加拿大等国使用的是积分系统，它的目标是挑选那些有教育背景或有专业技能的(这些在经济上被认为是需要的。)
Countries like Britain and Canada use a "points" system, which aims to select migrants who have educational levels or specialised skills that are deemed economically desirable.
现在有3000名学生参加科学计算机课程的讨论组，微积分组有2400人，而在汉语基础组中有800人。
There are now 3000 students participating in the CS study group, 2400 in the calculus study group, and 800 in the Chinese one.
如果你想避免又细有娘的眉毛，而又想保持积分干净和优美。
While you want to avoid thin, feminine eyebrows, you do want to keep them somewhat cleaned and polished.
有些网站给好的答案送积分，但是有些积分系统比较随意，我至今也不知道积分到底有何价值。
Other sites award points for good answers, although some points systems may be arbitrary and I'm still not sure what value most of those points have.
如果你希望温度有一个有限的变化，现在你需要做的就是积分。
So if you want to do a finite temperature change, now what you need to do is, you need to integrate.
在希尔顿酒店，我们有很完善的客人忠诚度项目——‘希尔顿荣誉会员计划’。该项目让客人可以累计积分和飞行里程，供以后酒店和机票预订时兑换。
At Hilton, we have a very well evolved customer loyalty programme, Hilton HHonors, which enables customers to save points and miles for future redemption in our hotels and with airlines.
设想一下，有一天你能够用飞行里程积分换杯啤酒喝。
Imagine someday paying for a beer with frequent flier miles.
关于这部分积分有问题吗？
通常你转换到极坐标系下，有可能积分区域更容易建立。
I mean usually you will switch to polar coordinates either because the region is easier to set up.
当你不得不用到微积分或生化学继续进行时，那你有必要回炉重炼了。
While this isn't going to work for your advanced level calculus or biochemical courses, the idea is that you should dumb down the information so it becomes obvious.
你有什么更多的积分，您可以在这里分享。
如果你有一张航空积分里程信用卡，正如我说的（西南签证），你可以为你自己赢得一个价值20000美元的免费往返旅行班机。
If you have an airline miles rewards card, as I do (Southwest Visa), you can earn yourself a free round trip flight for about $20, 000 in purchases.
如果你有一张航空积分里程信用卡，正如我说的（西南签证），你可以为你自己赢得一个价值20000美元的免费往返旅行班机。
If you have an airline miles rewards card, as I do (Southwest Visa), you can earn yourself a free round trip flight for about $20,000 in purchases.
如果你有一张航空积分里程信用卡，正如我说的（西南签证），你可以为你自己赢得一个价值20000美元的免费往返旅行班机。
If you have an airline miles rewards card, as I do (Southwest Visa), you can earn yourself a free round trip flight for about $20,000 in purchases.
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