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But we've defined the enthalpy of those elements in their stable state at room temperature and pressure as zero, right?
但我们已经定义了这些,元素处于它们室温和常压下,最稳定的状态时的焓为零，对吧？
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And that's consistent with other things that we've seen, Remember the whole thing about the perfect crystal at zero degrees Kelvin has zero entropy It's completely ordered.
这和我们看到的其他东西自洽吗？,想想零摄氏度下的,完美晶体的熵为零,这是完全有序的。
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So that should make sense, because we saw no energy difference between the actual atoms and the molecules.
这很好理解，因为我们看到,原子和分子的能量差为零。
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If security selection is a zero-sum game, the amount by which the winner wins equals the amount by which the loser loses -winners and losers being defined by performance after a security selection that has been made -well, that sounds like a zero-sum game.
如果证券选择是一个零和博弈,赢方赚得的金额,等于输方赔付的金额,谁赢谁输取决于,双方投资在证券选择后的表现,这听起来确实像个零和博弈
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In the language, if I can switch to the language of modern economics, one could say that for Thrasymachus politics is a zero-sum game.
换个领域的词汇，让我用现代经济学的话来说，这可能将，Thrasymachus，式的政治,喻成一场零和游戏。
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So, you remember from last time radial nodes are values of r at which the wave function and wave function squared are zero, so the difference is now we're just talking about the angular part of the wave function.
你们记得上次说径向节点在,波函数和波函数的平方,等于零的ｒ的处，现在的区别是我们讨论的是,角向波函数。
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SdT This has minus T dS minus S dT, but the dT part is zero because we're at constant temperature.
这一项包含负的Tds和，但是dT的部分等于零,因为温度为常数。
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We discovered that the quantity dA, under conditions of constant volume and temperature, dA TS And A is u minus TS.
我们发现在恒定的体积和温度下，亥姆赫兹自由能的变化，小于零，is，less，than，zero。,亥姆赫兹自由能A等于内能u减去。
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That's the some of delta u in these two paths and if we look at delta u in just path A, it's zero.
这是这两条路径△U的和,如果我们要看路径A的△U，它也是零。
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H We also saw that dS for constant H and p was greater than zero.
我们同样可以看到如果保持自由焓,和压强不变熵的变化dS也是大于零的。
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