铀

They might take out officially declared sites, but intelligence agencies know that there are others too, like the weapons-sized uranium-enrichment plant being built secretly in a mountainside on a well-guarded compound near Qom whose existence was revealed only four months ago.

官方公布的核基地可以被摧毁，但情报机构却披露仍有另外几处，像秘密建于山区的一座武器级铀浓缩工厂，有着重兵把守，于四个月前被曝光。

Fortunately there is a way to control the chain reaction of uranium atoms splitting each other.

幸运地是有一种方法去控制链式反应中铀原子的相继裂变。

The results show that the graphite coat after vacuum heat treatment can protect the uranium surface.

经过真空热处理后的石墨层均能够起到对铀表面的保护作用。

Uranium mineralization occurs when interlayer water with oxygen and uranium enclosed in primary red beds meet with reduction fluids along fractures.

矿化成因为原生红层中封存的含氧含铀层间水同沿断裂进入的还原溶液互相作用的结果。

To make clear to what degree the exchange of substance in the natural environment causes changes in local environment, the author resorts to geophysical techniques and means to monitor changes in salinity of shallow ground water, thorium/uranium/kalium spectroscopy gamma ray and minor elements in shallow surface layer.

为了探讨自然界的物质交换引起当地环境变化的程度，探索用矿场地球物理的方法和手段来监测浅层地下水矿化度的变化；钍、铀、钾自然伽马能谱的变化以及地表浅层微量元素的变化等。

The method is applied to the determination of nitrate ion in uranium dioxide sample with satisfactory results.

该法可用于测定二氧化铀产品中微量NO(上标-下标 3)，操作简单，可行性强，可以满足测定要求。

The toxic effects of uranium and lead to B.

实验考察铀和铅的质量浓度为1～2000mg／L。

Secular disequilibrium of uranium can lead to erroneous results.

铀的永久不平衡会导致错误的结果。

By calculating the ratio of uranium to lead, they determined that a dozen of the grains were very old indeed.

通过计算进入的铀的含量，他们确定了十二个锆石颗粒的确非常古老。

Its crystal accumulates atoms of uranium, which decay to lead at a known rate.

其晶体铀原子累积，导致在已知衰变率。

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。