查询词典 uranium-actinium

An inductively coupled plasma-atomic emission spectrometric method for the determination of trace thorium in uranium dioxide was established.

采用717型阴离子交换树脂分离试液中钍，建立了电感耦合等离子体原子发射光谱法测定二氧化铀中痕量钍的新方法。

In the sub-critical fast reactor core, the inner 7 subassemblies of CDFR were replaced with lead target subassembly, the control rod subassemblies were replaced with the subassemblies which contain MA and depleted uranium, and the radial blanket of CDFR were replaced with reflect subassembly.

次临界快堆堆芯在示范快堆堆芯基础上去掉中间7盒组件放置铅靶组件，控制棒组件用含贫铀和次锕系元素的组件代替，转换区组件用反射层组件代替。

Preparation of the adsorbents is of most essential in uranium extraction from sea-water.

吸附剂制备是海水提铀的关键。

The system has been used to geological mapping and uranium deposit exploration in vegetable-covered granite area, volcanic rock area and sediment basin.

利用该系统在植被覆盖的花岗岩、火山岩和沉积盆地地区进行了地质填图和铀矿找矿应用，取得了很好的应用效果。

The effects of pH value, redox potential, ferrous ions, total iron and uranium concentration were examine...

结果表明，在沥青铀矿石的细菌浸出中，细菌的作用以间接作用为主，即细菌把还原态的硫或单质硫及Fe2+氧化成Fe2(SO4)3。

She explains that the Four Corners area is particularly sacred because it literally holds Mother Earth''s internal organs -- coal and uranium which the Bureau of Indian Affairs has allowed the Peabody Coal Mine to mine.

她解释第四角落地方神性独特，因为它逐个保存了大地的心脏—印第安事物所准许Peabody煤矿开采的煤和铀矿。

In this case the geologists drilled into the stalagmites and estimated their age from the way that uranium decays into an isotope of thorium.

地质学家在石笋上钻孔，使用铀衰变成钍的同位素的方法确定它们的年龄。

Meanwhile,while Iran is moving toward nuclear weapons,some 37 tons of what they called yellow cake,the stuffthey use to make enriched uranium, while they're doing that,North Korea has moved from one bomb maybe,maybe,to four to seven bombs.

与此同时，伊朗却正在研发核武器。他们拥有37吨被他们称之为&黄饼干&的东西，即他们提炼浓缩铀的原料，在伊朗做这件事的时候，朝鲜也许已经制造了一件核武器，也许是四到七件。

S . installed electric-generating capacity , the rate of consumption of fresh nuclear fuel will have reached at least 55,000 short tons of yellow cake per year （ assuming that some of the spent fuel is by then being recycled in the form of reprocessed uranium and plutonium ） or at most 62,000 short tons of yellow cake per year.

到2000年，美国能量预算中的核能份量，希望达到国家所需电力的近一半，核燃料的需要预计会达到每年127，000到164，000美吨（同样取决于重新利用的程度）。

A second prerequisite is that uranium 235 must be present in sufficient abundance.

第二个必要条件是，铀235的含量必须够充足。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。