铀

Exports to Iran of purified uranium known as "yellowcake" would breach United Nations sanctions imposed on Tehran for refusing to freeze its uranium enrichment programme.

向伊朗出口有&黄饼&之称的提纯铀，将违反联合国因伊朗拒绝冻结铀浓缩计划而实施的制裁规定。

Novak mentioned Plame by name in a July 14, 2003, column critical of Plame's husband, retired diplomat Joseph Wilson, after Wilson reported an Iraqi purchase of uranium "yellowcake" from Niger was highly unlikely.

普拉姆的丈夫约瑟夫-威尔逊是一位退休的外交官，他之前曾提交报告，认为伊拉克向尼日尔购买&黄饼&(核反应燃料重铀酸铵或重铀酸钠)的传闻几乎不可能属实。

It is difficult to study directly ore-forming hydrogeochemistry of sandstone type uranium ore in arid area, therefore, author have found out the laws of solution, precipitation and migration of uranium minerals in the groundwater using the mechanism of water rock interaction and uranium, thorium and their isotopic ratios, and have probed into the relation between uranium ore-forming hydrogeochemistry condition, hydrogeochemistry environment and uranium ore-body fixed position by studying the epigenetic hydrogeochemistry trackways in the rock.

由于干旱地区对砂岩型铀矿成矿水文地球化学研究困难，难以取水样直接研究。因而在研究方法上，作者运用水岩相互作用原理和铀钍及其同位素比值，查明地下水中铀矿物溶解、沉淀和迁移规律；通过研究岩石中留下的水文地球化学形迹，探讨铀成矿水文地球化学条件、水文地球化学环境及其与铀矿体定位的关系。

The functions of casing for in-situ leaching of uranium,effects of casing wall thickness on bearing force,advantages and application of thin wall casing are discussed,and the practical suggestions to thin wall casing test and application to be conducted in China are proposed.

集国内外地浸采铀套管应用的经验，讨论了地浸采铀钻孔套管的作用，套管壁厚对套管受力的影响，薄壁套管的优势及应用，并对我国开展薄壁套管的试验与应用提出具体的看法。

The efficiency of isotope exchange was only 2.84%, namely, the amount of less than 3% tritium was exchanged out of the glass uranium bed by deuterium, and after isotope exchange proceeded time after time, its standard deviation was 7.35%.

同位素交换法测量铀床氚的结果如下：加热充分解吸过的铀床经多次同位素交换后，其交换效率仅为2.84%，即不到3%的氚被氘气载带出来，其同位素交换法测量的标准差为7.35%。

The uranium is then dissolved from the beads using a solution of ammonium carbonate and precipitated as "yellow cake", a mixture of uranium oxides.

接下来，小珠子里头的铀离子会被碳酸铵溶液溶解，其后沉淀，析出&黄饼&，即各种铀氧化物的混合物。

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。

Enriching uranium increases the uranium 235 concentration in the material, which increases the amount of fission that occurs in a given amount of uranium.

浓缩铀提高了铀235的浓度，从而增加了一定数量铀中发生的裂变量。

This is a marksmanship nuclear cruise missiles, its nuclear fuel loading is from natural uranium -235 electromagnetic separation of uranium-rich set production.

这是一颗枪法核航弹，其核装料铀－235是从天然铀用电磁分离法富集生产的。

"Uranium Chemical element of the actinide series (with many transition element properties), chemical symbol U, atomic number 92. A dense, hard, silvery white metal that tarnishes in air,"

铀：周期表IIIb族锕系放射性化学元素，化学符号U，原子序数92，铀是致密的银白色金属，其硬度不足以刻划玻璃，于空气中会失去光泽。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。