Gas reactors require enrichments in the order of up to 20%. So we need to fabricate the uranium into pellets which are clad in zirconium tubes which are placed into the reactor core.
气体反应堆要求充实，以此能，达到20%，所以，我们需要制造出在芯块中的铀，那是锆管道的金属外壳，那被放置入一个反应堆核心里去。
Ultimately ending up with a group of thermalized neutrons that also have a certain probability of leakage from the reactor.
最后得到的是一群的热化的，中子，那也有一定的，从反应堆中泄露的可能性。
It wants to be seen as a reliable supplier, so as to pick up more reactor contracts from others.
它希望被视为一个可以信赖的供应商，以便从其它国家获得更多的反应堆合同。
That means cooling water is not getting to the reactor core, causing a build up of steam inside the containment vessel.
这意味着冷却水并没有进入反应堆核心，从而导致了安全壳内的气压上升。
Or you can have a pebble bed reactor which is a continuous flow of pebbles that go in and out of the reactor over time to make up the excess activity.
或者，你们能有一个球床实验反应堆，那是有球体不断的出入，反应堆，随着时间，用来补充剩余反应性。
A nuclear reactor produces electricity by heating up the radioactive material in its core, which then heats water to produce steam. That steam is used to turn turbines that produce electricity.
核反应堆通过加热堆心的放射性物质产生电力，然后用这些电力加热水产生蒸汽，再用蒸汽驱动涡轮发电机发电。
We also have this back end in which after the spent fuel is used up in the reactor. It is stored, possibly re-processed, which we use to do, and recycled back into the reactor.
我们也有末端，那是在,乏燃料用完之后，它被储存，可能会再加工，我们曾经，在反向循环，再用到反应堆里。
By contrast, reactors have strong containment vessels that stand a better chance of bottling up radiation from a meltdown of the fuel in the reactor core.
相反，反应堆拥有非常坚固的围阻体，可以承受由于反应堆堆芯融化而产生的大剂量辐射。
In the experiments the reactor cycled up to 1,600c then down to 800c over 500 times, without damaging the catalyst.
在实验中，反应器工作的温度在1600度，在500次反应后降到800度，但没有破坏催化剂。
In the experiments the reactor cycled up to 1, 600c then down to 800c over 500 times, without damaging the catalyst.
在实验中，反应器工作的温度在1600度，在500次反应后降到800度，但没有破坏催化剂。
Last month Iran passed its latest milestone with the fuelling of its first power-generating reactor, set up long ago by the Russians at Bushehr.
上个月，伊朗迈过了最新的里程碑——为早前由俄罗斯在Bushehr建造的伊朗第一个发电反应堆添加了燃料。
So once the pebble is depleted a fresh pebble can be put it in or it can be re-circulated back in the reactor if its burn-up isn't all used up or the fuel isn't all used up.
所以，一旦球体被分离了，新的球体能够,放进去或者它能够在计算回反应堆里,如果它燃烧完了，但没有用完，或者燃料,没有全部用完。
Under it, Iran would give up most of its uranium stockpile in return for enriched fuel for a medical reactor.
根据这份合约，伊朗将放弃它的大多数储备铀以换取医用反应器的高浓度燃料。
If you're not comfortable with the material let's try to get some help to bring you up to speed because we're gonna assume that you understand reactor physics and this is basically a refresher course.
如果你对这些材料感到不是很舒服，我们来试试帮助你们加快速度，因为我们将要保证，你们能理解反应堆物理，这主要是一门复习课程。
Nuclear power results in up to 25 times more carbon emissions than wind energy, when reactor construction and uranium refining and transport are considered.
而如果把核反应堆的建设和铀的提炼和运输过程算上，核能的碳排放量是风能的25倍。
Blowers move helium gas through the reactor and over the pebbles, where nuclear fission releases large amounts of energy, heating up the helium.
鼓风机将氦气吹过反应堆，经过核裂变释放出大量能量的小球，加热了氦。
The Ukrainian reactor blew up and spewed huge amounts of radiation for 10 days in 1986.
1986年乌克兰的一座反应堆发生了爆炸并且持续10天喷发出大量的放射性物质。
Unless you have a mechanism to remove that, the heat can build up and can eventually damage the radioactive fuel or the reactor.
除非你有途径将它移除，否则热量将积累并最终破坏放射性燃料或核反应堆。
Niger may be the world's fifth-largest uranium producer, but the cost of building a reactor to make use of it would take up more than half the country's GDP.
尼日尔是世界第五大铀生产国，但至今还没有建设出一个反应堆，因为光建造费用就超过其GDP的一半。
A single Maple reactor can supply the world's total current needs; the second one is a back-up to keep the supply flowing during routine repairs.
只一座枫叶反应堆就能满足目前全世界所有的市场需要，另外一座可以作为后备，在第一座反应堆日常维修时也能保证正常供应生产。
In the way enrichment works, getting from 20% to bomb-usable 90% enrichment takes a lot less effort even than churning out the initial 3.5% reactor-grade stuff still piling up at Natanz.
走浓缩这条路，从20%到可用作造核弹的90%的浓缩所要花费的努力甚至比艰苦地做出开始的3.5%浓度的反应堆物质要少的多。 在纳坦兹，伊朗依然在生产3.5%浓度的浓缩铀。
This greatly increased the amount of water available to soak up the heat, and should have made sure that the reactor was fully covered by water and thus not hot enough to damage itself any further.
此举是增加水量来吸收热量，并要确保反应堆完全被水覆盖，这样高温就不会进一步损坏反应堆。
The nuclear fuel is encased in hard alloys to construct fuel rods; the reactor core that these rods make up, and the water it sits in, are contained within a steel pressure vessel.
核燃料的形式是在硬合金包裹下的燃料棒；并且这些燃料棒放在水中，外面还有一层钢压力容器。
Areva and Mistubishi Heavy have rival designs of their own, but have also set up a joint venture to promote yet another type of reactor.
尽管Areva和三菱重工有各自的设计，但是同时也筹建了合资企业用以推广另一款反应堆。
Plutonium is produced during nuclear fission, so is present in all reactor cores - the longer the fuel has been there, the more plutonium will be present, up to about 1%.
钚是在核裂变过程中产生的，所以在所有的反应堆中都存在---燃料在反应堆内烧的时间越长，产生的钚就越多，最高可以到1%。
Plutonium is produced during nuclear fission, so is present in all reactor cores - the longer the fuel has been there, the more plutonium will be present, up to about 1%.
钚是在核裂变过程中产生的，所以在所有的反应堆中都存在---燃料在反应堆内烧的时间越长，产生的钚就越多，最高可以到1%。
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