但是尽管发生了这一切不幸，反应堆外壳并没有破裂，放射性物质的泄漏也非常有限。
But despite all that, the reactor vessels have held, and radioactive release is limited.
报道中称1号和3号的反应堆外壳是完好的，但是2号反应堆中的某个构架被炸坏了，致使水无法完全淹没核心。
Primary containment vessels in units 1 and 3 are reportedly intact, but a structure in unit 2 has cracked, preventing water from fully covering the core.
如果反应堆的外壳结构不够坚固的话，那么燃料就有可能泄露到外面的环境，这将会对周围的地区产生毁灭性的结果。
If the containment structure around the reactor is not strong enough, the fuel potentially could be exposed to the outside environment, and can have devastating consequences for nearby communities.
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。
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.
反应堆由一个钢与混凝土构成的厚实外壳(第一层安全壳)保护着，另外还配有一个蓄水库，防止反应堆过热。
The reactor vessel is surrounded by a thick steel-and-concrete primary containment vessel, equipped with a water reservoir designed to suppress overheating of the vessel.
圣地牙哥州立大学副教授杰尼克斯说，燃料棒外面的4号反应堆的外壳相当有可能出现裂缝。
There was a real possibility of a leak in the No 4 reactor container, which houses the nuclear fuel rods, according to Murray Jennex, a professor at San Diego State University in California.
反应堆压力容器包括顶盖、加肋管板，壳体(外壳和底部壳体)三部分。
The pressurized vessel of a nuclear reactor consists of three parts: the top cap, the ribbed tube-plate and the shells (the external shell and the bottom shell).
星期一清早福岛核电站被疑似氢气的爆炸炸毁了3号反应堆建筑结构的外壳。
At the Fukushima plant, a suspected hydrogen explosion early Monday blew the roof off the building housing the Number 3 reactor.
星期一清早福岛核电站被疑似氢气的爆炸炸毁了3号反应堆建筑结构的外壳。
At the Fukushima plant, a suspected hydrogen explosion early Monday blew the roof off the building housing the Number 3 reactor.
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