查询词典 uranium

A writer has found a small deposit of manganese ore and rock specimens flecked with uranium or stained green by copper.

一名作家还发现了一个不大的锰矿堆积体和一些粘染有铀痕迹或者带着铜绿斑痕的矿石标本。

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

Britain, Germany and France have been trying to get the Islamic republic to forswear uranium enrichment (which could lead to the building of a nuclear bomb) in exchange for mostly-economic incentives.

英国、德国和法国一直试图主要用经济刺激措施来使这个伊斯兰共和国断然放弃浓缩铀。

So little is known about it, because there is only about 1 ATOM OF FRANCIUM IN A CUBIC FOOT OF URANIUM ORE!

对它所知甚少，因为在1立方英尺的铀矿石中，仅有1个钫原子！

Second, a number of electronprobe tests indicate that francolite extensively coexists with uranium minerals.

富铀矿体铀、磷胶体共沉淀机理很好解释了群脉型矿床中存在富铀矿体的客观事实。

In nuclear power industry, the recycling of uranium and plutonium metal in the form of used nuclear fuel rod is often an important subject.

於核能发电工业中，废燃料棒中铀及钸金属之回收再利用，是核能工业上最主要研究项目之一。

About 21 percent of the world's nuclear reactors are now fueled by uranium mined using this method.

约21%的核反应堆正在开采的铀燃料的使用这种方法。

When the hydrogen bomb, the fusion reaction caused by a large number of high-energy neutron fission of uranium in the shell, release of energy and fission neutrons, fission and fusion neutron part of charging the lithium--6 nuclear event of a nuclear reaction Tritium, tritium and deuterium occurs again further fusion reactions.

当氢弹爆炸时，聚变反应产生的大量高能中子引起壳体中铀核裂变，放出能量和裂变中子，裂变中子有一部分与聚变装料中的锂－6核发生核反应产生氚，氚又与氘发生进一步的聚变反应。

The formation and gathering of coal, gas, oil and uranium are always related to the given sequence position or sedimentary system. Moreover, the formation of sequences are controlled by tectonism, supply of sediments, transformation of base level and climate etc.

煤、气、油、铀形成和富集总是和特定的层序部位或者特定的沉积体系相联系，而层序的形成受控于构造作用、沉积物供应、基准面变化和气候等多个方面。

Andrew Ferguson, who manages Geiger Counter, a nuclear investment fund, reckons that more than 200 uranium-mining firms have listed on stockmarkets around the world in the past 18 months.

核能投资基金Geiger Counte的管理者Andrew Ferguson估算在过去的18个月内，200多家的铀矿开采公司在全球各大股市挂牌。

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。