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The International Energy Agency has predicted a potential seven million barrel per day gap between supply and demand by 2015.
VOA: standard.2009.10.20
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It's much more relevant to set our zero point energy as the separation of a bond in terms of talking about the reactions that we'll usually be dealing with here.
更好的是把零点能定在,键断裂的时刻,在讨论化学反应的时候,而我们以后将经常遇到化学反应。
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And there's a new energy about the Royal Family now
现在皇室有一股新的力量，
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If properly managed, clearing and replanting trees in a 30-year cycle creates both a renewable source of energy and maximum rubber production.
VOA: standard.2009.09.13
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So, in this class we'll be talking about energy a lot, and it's often useful to draw some sort of energy diagram to visualize the differences in energy that we're discussing.
所以，这堂课我们会讨论很多,关于能量的问题，讨论时，画能级图来使能量差别,形象化常常是很有用的。
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To promote that mission Swan has just published an autobiography in which he writes passionately about the importance of a clean energy agenda.
VOA: standard.2009.12.10
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I have got to put that in because that is a repulsive energy and that is going to decrease the energy of the system.
我必须要说清楚,因为这是一个排斥能,这将要减少这一系统的能量。
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(Sound) Iran's English-language Press TV reports that International Atomic Energy Agency inspectors are beginning a three-day visit to Iran,Saturday, to examine the country's Fordoo nuclear enrichment facility.
VOA: standard.2009.10.24
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In other words, now I know how to tell how the Helmholtz free energy changes as a function of temperature.
换句话说，我现在知道如何写出亥姆赫兹,自由能作为温度的函数。
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Energy and Commerce Committee Chairman, Democrat Henry Waxman ordered a pause in his panel's drafting of the measure as Democrats work to overcome differences within their party.
VOA: standard.2009.07.21
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And you can get to things like the macro-stressed insure, and energy flow in a much more robust way than you can even in an advanced course of magnetism.
所以你便可以更形象地理解,像微粒，能量流动,等概念,你甚至可以,比在高级课程更讲的程度深。
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On broader themes, Mr.Obama announced a U.S.initiative to boost lending and spur economic growth and recovery in the Americas, and proposed a hemispheric partnership to tackle energy and climate challenges.
VOA: standard.2009.04.17
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This conversion from a mechanical energy into a chemical energy can be nicely visualized when one fills a hair cell with a sensitive die that responds to the calcium ions that influx into the cell.
如果在毛细胞中注入,对钙离子敏感的物质,可以精确地模拟,这一机械能到化学能的转化过程。
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Earlier this month, as part of a energy and water funding bill, the Senate approved a provision preventing companies selling or shipping gasoline to Iran from supplying oil to the U.S.
VOA: standard.2009.10.28
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And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.
与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。
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(Sound) Amid loud acclamations of approval, top hardline Iranian cleric, Hojatoleslam Ahmad Khatami warned the West that Tehran will produce its own high-grade uranium for a medical research reactor, if the UN International Atomic Energy Agency refuses to provide the fuel.
VOA: standard.2009.11.28
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Just to refresh our memories, we looked at the average valence electron energy as a measure of reactivity.
重新回顾一下我们记忆，我们看了平均价电子能,能用来测量反应性。
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They have a material that supplies electrons and a power source that lifts the energy level of those electrons.
VOA: special.2010.09.01
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In contrast, the dissociation energy of a bond for hydrogen, and molecular hydrogen is everywhere around us, we see 432 kilojoules per mole.
相反，氢分子在我们周围到处都是，一个氢分子的离解能，是432千焦每摩尔。
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The owners of the historic building say a planned make-over will reduce energy use in the building by thirty-eight percent.
VOA: special.2009.05.22
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Instead, we have a certain energy, we have certain geometric constraints, we have a certain energy constraint and these fall out.
然而，我们有确定的能量，我们有某些几何约束，我们有某些能量约束。
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He was a writer who used all his energy to make the world a better place for poor people.
VOA: special.2010.08.01
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So, what we get for the disassociation energy for a hydrogen atom is 424 kilojoules per mole.
因此，我们就得到了氢原子,离解能的大小为，424，千焦每摩尔。
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The National Osteoporosis Foundation says a test called Dual-energy X-ray absorptiometry,or DXA, is the best test for osteoporosis.
VOA: special.2010.08.31
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And we can actually better visualize this if we plot how that energy changes as a function of internuclear distance.
而我们就能更清楚地看到这些，如果我们画出,能量随核间距的变化曲线。
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Scientific American magazine says huge lasers turn only about twenty to thirty percent of the energy they use into a laser beam.
VOA: special.2010.09.01
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You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.
你知道，如果你想测量重力场,中某种东西的势能，你需要，在某处定义一个零点，对吧？,因为势能的值是任意的,你可以把它设定在。
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For example, a popular energy shot warns against use by people who are pregnant, nursing a baby or under the age of twelve.
VOA: special.2009.07.22
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So, we see that the two h atoms separate have a certain energy that's lower than when the electron's not with the atom.
那么，我们看到两个分开的氢原子所具有的能量,比原子中没有电子时更低。
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But we see if we have a free electron, as we do in this dotted line here, that's going to be a higher energy that's less stable.
但是我们看到如果,我们有一个自由电子，就像虚线所示那样，那将会是一个较高的,不够稳定的能量。
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