The "trigger" may be a conventional uranium-atom bomb.
这种“引爆器”可以是一枚常现铀原子弹。
To make an atomic bomb we have to use uranium 235, in which all the atoms are available for fission.
制造原子弹，我们必须用铀235，因为铀的所有原子都会裂变。
To make an atom bomb we have to use uranium 235, in which all the atoms are available for fission.
制造原子弹必须用铀235，因为它的所有原子都可以裂变。
To make an atomic bomb we have to use uranium 235, in which all the[/url] atoms are available for fission.
制造原子弹，我们必须用铀235，因为轴的所有原子都会裂变。
Vranium holds not only the promise of a vast new energy source, but also the grim specter of an atomic bomb.
铀不但能提供巨大的新能源，也能产生原子弹这种残酷的恶魔。
The palent radical UO22+.
铀酰，双氧铀根二价原子团UO22＋
When an atom of U235 is split,several neutrons are set free.
一个铀235原子分裂时,释放出几个中子。
An atomic or a nuclear bomb.Used with the.
原子弹原子弹或核弹。与the连用
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，与慢中子发生裂变
Having an atomic number greater than92.
超铀的原子序数超过92的
a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms.
一种放射性的超铀金属元素，在用氦原子轰击铀时发现。
Nuclear energy is concentrated, but the fissionable material, uranium 235, is well under 1% of the natural or mined uranium 235.
原子能能量非常集中,但裂变材料铀235在天然铀矿中含量不到1％。
Determination of oxygen to uranium atomic ratic in uranium dioxide powder and pellets by thermogravimetric method
GB/T11842-1989二氧化铀粉末和芯块的氧铀原子比测定热重法
Transuranium element Any of the chemical elements after uranium in the periodic table (with atomic numbers greater than 92).
超铀元素: 周期表中铀以后的任何化学元素(原子序数大于92)。
the warhead of a missile designed to deliver an atom bomb.
导弹的弹头，用于发射原子弹。
Chain-reacting piles, or atomic-power reactors, contain a great quantity of uranium
链式反应堆，即原子反应堆含有大量的铀。
Nuclear energy can be obtained by breaking up the nuclei of the heaviest atoms such as those of uranium.
通过分裂最重的原子核，如铀的原子核，就可以获得核能。
any element having an atomic number greater than 92" (the atomic number of uranium); all are radioactive.
原子序数在以后（铀的原子序数）的元素，都是放射性元素。