沥青

A method is described for the separation of high purity 230Th from pitchblende based on ion exchange.

本文以阴离子和阳离子交换法从沥青铀矿中提取~(230)Th。

Marie Curie, a famous scientist, has set a good example. In 1898, Marie found a new element in the pitchblende.

玛丽。居里，一位著名的科学家，就是一个很好的例子。1898年，玛丽在沥青铀矿中发现了一种新元素。

A gummy orange mixture of uranium oxides and silicates occurring naturally in the hydration and oxidation of pitchblende.

一种橙色粘性的铀氧化物和硅酸盐的混和物，由沥青油矿在水合作用和氧化作用下天然形成。

In reality the proportion of the hypothetical element was far lower and it took several years to show unequivocally that ''.'pitchblende'.

实际上这种假设中的元素的浓度要小得多，我们花了几年时间才明确无误地证明沥青铀矿物质中至少含有一种高放射性物质，在化学意义上这就是一种新元素。

In reality the proportion of the hypothetical element was far lower and it took several years to show unequivocally that pitchblende contains at least one highly-radioactive material which is a new element in the sense that chemistry attaches to the term.

实际上这种假设中的元素的浓度要小得多，我们花了几年时间才明确无误地证明沥青铀矿物质中至少含有一种高放射性物质，在化学意义上这就是一种新元素。

We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium , while the other, paired with barium, has been called radium.

我们发现沥青铀矿物中至少含有两种放射性物质：与铋伴生的命名为钋，与钡伴生的命名为镭。

And oxidation of pitchblende.

一种橙色粘性的铀氧化物和硅酸盐的混和物，由沥青油矿在水合作用和氧化作用下天然形成。

Cold repair asphalt mixture doesnt need heating,and has strong adaptability to the surroundings,which is a convenient and feasible pothole distressesmaterial.

冷补沥青混合料不需加热，适应能力强，是一种方便可行的坑槽修补材料。

The basic principle is the VCA formed by the coarse aggregate is filled with the fine aggregate,the filling,the asphalt and the preconcerted void content.

其基本原理为：矿料级配中粗集料形成的孔隙率由细集料、填料、沥青和预定孔隙率填充。

The road is not sealed with premix and is only a gravel road since its completion few years back.

该段道路在几年前已完成并启用后一直都没有铺上沥青，迄今还是砂石的路面。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。