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254 So, basically all we did was take 12 54, 22 subtract 12 32, and we got 22 electron volts.
基本上我们所要做的全部也就是用，减去，1232，这样就得到了。
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So this delta energy here is very simply the energy of the initial state minus the energy of the final state.
很简单的，这个能量差等于,初始能量减去末能量。
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That's the important message, delta H of formation of the products, minus delta H of formation of the reactants.
去反应物的生成焓，这,是个重要的信息，生成物的生成焓,减去反应物的生成焓。
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That is going to equal the energy of the electrons in H2 minus the energies of the electrons in H.
这等于H2分子的能量2,减去H原子中电子的能量。
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So you get the profits of the firm minus the disutility of having missed all that sleep.
你的收益是公司的利润,减去放弃了休息的负效用
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And the yardstick that we're at least doing our best to apply is one of measuring up the pleasure and subtracting the pain.
我们尽最大努力去应用的标准,是汇总快乐，再减去痛苦。
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Effectively, you get interest from this because it's sold at a discount, so the price that you pay is equal to one hundred minus the discount.
实际上,你仍然从中获得利息,因为债券是打折出售的,所以买入价,等于一百减去折扣
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Knowing that, I'm going to say, OK, how many pigs are there, well that's just how we're, however many I had total, minus that amount, and then I can see, how many legs does that give, and then I can check, that the number of legs that I would get for that solution, is it even equal to the number of legs I started with, ah! Interesting. A return.
它将给我返回头的总数，知道了这些之后我可以说好了,有多少猪呢，无论有多少组鸡的数目，我只要用总数减去那个值,之后我就可以知道一共有多少条腿,然后再把这个值和题目中的腿数相比较，看它是否等于一开始的腿数,啊！真有趣，有一个返回值。
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That's true, but especially because of my parenthesization 32 over here, because I'm saying, "Do f minus 32, but then multiply it by the division on the left."
是那样的，但是特别地，因为我这里加上了括号,因为我指明，“f减去，然后它乘以左边的那个除法的结果“
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/2 So the bond order is going to be equal to 1/2, and then it will be 2 minus 2.
它的键序等于，然后乘以2减去2。
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Our ionization energy is going to be equal to the incident energy coming in, minus the kinetic energy of the electron.
我们的电离能将等于,入射能量，减去电子的动能。
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PROFESSOR: And I didn't write up there but it is one, 1 and we can see that it's 1, 2 because it's 1/2 of 2, 4 minus 2, so 1/2 of 2, the bonding order is going to be equal to one.
教授：我没有写出来，但是是1，我们可以看到为什么是，因为它等于1/2的2，4减去，所以1/2的2，键序等于1。
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One over two squared minus one over n squared 3 4 5 where n takes values three, four, five, six.
除以，2，的平方再减去1除以n的平方,将n赋值为。
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If instead we had a positive ion, a cation, what we would have to do is subtract 1.
如果我们有一个带正电的离子，一个正离子，那我们就需要再减去一个。
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Right? In other words I've got the stoichiometric coefficients in there and the values, and I'm subtracting the reactants from products -1652kJ/mol wind up with minus 1652 kilojoules per mole.
对吧？换句话说这里我用了化学,计量系数和生成热的值，从生成物中减去反应物,最后得到。
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You might think, well, that's just a matter of adding up the goodness of life and subtracting the badness of death and summing whatever it comes to.
你可能会想，不就是把生命的好处加起来,再减去死亡的坏处,然后相加得出一个结论么。
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I have some kind of moral conscience and after I've subtracted off my guilt feelings I end up at -1, so think of this as guilt: some notion of morality.
而晚上睡不着觉,所以减去我的负罪感的负效用后,我只得-1,把它看成负罪感吧
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You get nineteen times your money over eighty-one years, but then if you take into account the inflation consumes a multiple of eleven and you're an institution like Yale that consumes only after inflation returns, putting your money into treasury bills really didn't get you very much.
1年后你的钱翻了19倍,但是如果考虑通货膨胀,在此期间侵蚀了11倍的收益,而且如果你是像耶鲁这样,减去通货膨胀调整到实际回报后再论支出,那么将钱投资于短期国库券,不会让你赚得多
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So we're just subtracting, in effect, zero, right, from the enthalpy of the product, but of course it's important have that established because the heat of formation is something you could measure, right?
所以从效果上说，我们只是，从生成物的焓中减去了零，但，是确立这一点很重要,因为生成热是,你能测量的东西，对吧？
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Delta H of formation means the enthalpy of this compound minus the enthalpy of its constituent elements in their most stable state at room temperature and pressure.
生成焓就是这种组分,的焓减去它的所有组成元素,在室温和常压下处于,其最稳定的状态时的焓。
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It can be 5 dollars minus your error in pennies, if you won.
如果你赢了就是五美元减去你的误差
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And then we can take the derivative with respect to temperature, it's just R over molar volume minus b.
这样我们求,压强对温度的偏导数，结果等于R除以摩尔体积V杠减去b的差。
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If we go to the oxygen atom, now we're talking about starting with 6 in terms of valence electrons again, but instead of 2, you can see we have 6 lone pair electrons around the oxygen minus 1/2 of 2, so we have minus 1 is our formal charge.
如果我们分析氧原子的话，现在我们讨论的还是,从六个价电子开始，但孤对电子不再是两个了，你会看到氧周围,有六个孤对电子，再减去二的一半，因此我们有一个负的形式电荷。
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I won't bother to write it separately for Firm 2, it's going to be the quantity it sells times the price it gets for that quantity, minus that quantity it sells times the cost it incurs in producing that quantity.
我不用另外写公司2的收益了,收益是销量,乘以对应的价格,减去销量乘以产品,的生产成本
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So basically what I'm going to do here is I'm going to set my price to equal his price, minus a little bit, I'll just undercut him a little bit and by just undercutting him a little bit, I'm going to get the whole of the market and I'll make as much money as I can on those sales.
所以基本上我要做的是,设定我的价格等于他的价格,减去一点点,我的价格将仅仅比他的低一点点,并且通过比他的价格低一点点,我将占领整个市场,那些销售带给我尽可能多的钱
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Minus p, right? But in fact, if you go back to the van der Waal's equation of state b here's RT over v minus b.
再减去p，对吗，但是实际上，如果你代回范德瓦尔斯气体的状态方程,这里是RT除以摩尔体积减去。
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b It's RT over molar volume minus b minus a over molar volume V squared.
它等于RT除以摩尔体积V杠减去,再减去a除以摩尔体积的V杠平方。
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- Like, it doesn't matter, like, you have minus 32 even though -- >> David: F minus 32?
如果你只是减去32，这是没有关系的-,>>，大卫：F减去32？
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Then minus 1/2 of 2, because we only have one bond or 2 electrons in a bond.
然后减去二的二分之一，因为我们只有一个键，一个键就是两个电子。
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So we know that it's 1, because we have 1, 2, 3, 4 bonding, minus 2 anti-bonding, and 1/2 of that is a bond order of 1.
我们知道它是，因为我们有1，2，3，4个成键，减去2个反键，它的一半就是键序为1。
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