1. Fertile meaning the none fissionable uranium 235.
丰富的意思是裂变的铀。
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2. The isotope of uranium with mass number235, fissionable with slow neutrons.
锕铀铀的同位素，原子质量数为235，与慢。
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3. In a hole in the center of this system is placed a subcritical sphere of fissionable material.
在这个系统的中心圆洞中放置一枚次临界的球形可裂变物质。
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4. The reaction is slowed by a combination of depletion of the fissionable material and expansion of the core.
由于裂变物质的耗尽以及由于核心的膨胀，才使反应减慢下来。
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5. There also need to be enough fissionable atoms about for the neutrons to bumpinto—in other words, a critical mass.
同时还需要足够多的、可裂变的原子核用于中子进行撞击，换句话说，需要一个临界质量。
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6. The atomic energy agency could be made responsible for the impounding, storage, and protection of the contributed fissionable and other materials.
原子能代理处能够为滤网、储蓄、捐献可裂变物质保护和其他能源负责。
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7. The prime example is the element uranium (U), which occurs naturally as two isotopes-the lighter, fissionable U-235 and the heavier, non-fissionable U-238.
8. The system has enhanced capabilities to recognize the elemental content of a container which can be used to detect concealed explosive and fissionable materials.
该系统具有识别集装箱的基本内容的增强能力，可用于检测隐藏的爆炸物质和裂变物质。
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9. The ingenuity of our scientists will provide special safe conditions under which such a bank of fissionable material can be made essentially immune to surprise seizure.
我们科学家的这种独创性将供应特殊的安全的条件，在裂变物质储藏所能够从本质上获得免疫的就被奇袭没收。
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10. It is a radiological poison, specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu 239, as a reactor fuel and in nuclear weapons.
尤其是其极具可裂变性的同位素钸239，被用作一种核反应燃料并用在核武器中。
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11. It is a radiological poison, specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu 239, as a reactor fuel and in nuclear weapons.
