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uranium 235

美英

网络铀二三五

uranium 235

uranium 235

英-英网络释义

uranium 235

铀二三五

铀元素会产生核分裂的只有铀二三五(uranium-235)，然而铀二三五只占天然铀的0.7%，完全不会出现核分裂的连锁反应，属相 …

1

Because uranium-235 is quite rare , making up less than 1% of natural uranium, it has to be enriched until the fuel contains 2-3%.

由于铀 235 很稀有，只占天然铀中的不足 1%，所以必须提高浓度，让燃料中有 2~3%的含量。

2

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。

3

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。

4

To make fuel for electricity-generating reactors , uranium is enriched to less than 5 percent of the isotope U-235.

为将燃料做成电能反应堆，铀被浓缩至 U-235 同位素含量 5%以下。

5

And the energy density of uranium 235 in terms of thousand times the energy density of coal .

铀 235 的能量密度，能量密度乘以煤的。

6

a uranium isotope with mass number 235; capable of sustaining chain reactions .

铀的同位素，原子质量数为，能进行持续的连锁反应。

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So you put in more fuel , more uranium 235, a higher enrichment and you need to balance that excess reactivity in a number of ways .

所以你放入更多的燃料，更多的铀，一个能咖的浓缩度，你需要平衡，剩余反应性，用很多方法。

10

An atomic bomb uses conventional explosives to slam together two lumps of fissionable material, usually uranium-235 or plutonium-239.

原子弹利用常规爆炸让铀 235 和钚 239 这两块分裂性原料相互撞击。

11

Uranium 235 -- the fuel inside a nuclear reactor -- undergoes nuclear fission .

铀 235——反应堆中的燃料 ——经过核裂变。

12

The neutrons which are produced will bombard more uranium -235nuclei. This will produce more neutrons and more nuclear energy is released .

产生的中子将轰击更多的铀 -235 核子，会产生更多的中子并释放更大的核能。

13

The fission of uranium -235 is more likely to occur with slow neutrons than with fast neutrons.

慢中子较快中子更可能使铀 -235 发生裂变。

14

This is called a Fission Neutron Energy Spectrum based on the thermal fissioning of uranium 235.

这称为裂变中子能谱，基础是铀 235 的热能裂变。

16

Enriched uranium fuel that has a higher proportion of uranium -235 is used in the production of nuclear energy .

铀 -235 含量较高的浓缩铀燃料用于核能的生产。

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Uranium-235 is the fuel for nuclear power stations . It contains 92 protons and 143 neutrons.

铀 -235 是核电站的燃料，其原子核内有 92 粒质子及 143 粒中子。

20

Uranium depleted in U 235 and its compounds ;

已耗乏铀 235 及其化合物；

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