uranium

Only 7 uranium atoms of every 1,000 are U - 235.

在每1000个铀原子当中,只有七个是铀235.

Radiometric techniques are not always appropriate to the earth for uranium deposits.

放射性方法在铀矿普查中并不总是有效的.

It was actually used for enriching uranium to weapons-grade levels.

实际上，它是用来将铀浓缩以制造武器。

Enriched uranium is a key component of a nuclear weapon.

浓缩铀是核武器的关键组成部分。

At Scinto 6 uranium occurs in much altered dolerite below the unconformity.

“辛托6”的铀矿体产于不整合面之下变质甚深的粒玄岩中.

Radiogenic heat, even from a fairly deep - seated uranium orebody, could be measured.

即使铀矿体埋得足够深,它的放射成因热也能被测出.

To make the fissile material, he needs to develop an ability to enrich uranium.

为了得到分裂物质，他需要发展浓缩铀的能力。

They went over nationwide in search of uranium mines.

他们为了探寻铀矿走遍了全国.

The concept holds that uranium is leached by groundwater from tuffeceous rocks.

该理论认为,来自凝灰岩的地下水淋蚀铀.

Pitchblende and chalcolite are much more radioactive than uranium itself.

沥清铀矿和铜铀云母比纯铀的放射性强得多.

The earliest production reactors necessarily used normal uranium as fuel.

最早为生产用的反应堆,必须使用普通铀作为燃料.

Uranium is soluble in sea water.

铀可溶解于海水。

A metal called uranium gave off a kind of radiation.

一种叫铀的金属会发出一种射线.

Uranium is available in considerable quantity from various areas of the world.

世界上许多地区都有相当数量的铀储量。

Uranium minerals also occur in the basal beds of the kombolgie formation.

铀矿物也见于科姆波尔吉建造的基底层位中.