查询词典 uranium

Uranium in the ore is separated and converted into U in HCl andcomplexed with TPC and a new type thoron reagent,2(phosphino-chloro-benzenediazo)-7 (disulfo-naphthyl-diazo)-naphthalene-1, 8 diol-3, 6 disulfonic acid.

铀在 0.5—1.4 mol/l盐酸中，用氯化十四烷基吡啶作增溶剂，铀与偶氮氯膦6，8-萘二磺酸-TPC形成的三元络合物具有极高的灵敏度ε_(705nm=1.6×10~5l·mol~(-1)·cm~(-1)和较好的选择性。

Basing on the separation of trace plutonium from uranium matrix,the operating parameters of MC-ICP-MS were studied and optimized for determining the isotope ratio of trace plutonium, such as the adjustment of resolution, selection of mode of ion extraction, elimination of background and interference, etc.

本工作在铀钚化学分离的基础上，对影响MC-ICP-MS法精确测量痕量钚同位素丰度比值的仪器条件进行了优化，研究了仪器分辨率、离子提取模式的选择、"背景和干扰"等参数的影响，探索研究了MC-ICP-MS上质量偏倚的校正方法。

A radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms.

一种放射性的超铀金属元素，在用氦原子轰击铀时发现。

A synthetic transuranic element first produced by neutron irradiation of uranium in a thermonuclear explosion and now usually produced in the laboratory by irradiating plutonium and other elements.

锿一种人工合成超铀元素，在一次热核子反应的铀中子辐射中首次产生。

Transuranic waste; uranium; radioactivity; nuclear waste; geology; rocks; hydrogeology; Quaternary; stratigraphy; ground water; hydrochemistry; UK; Cumbria

关键词：超铀元素废弃物；铀；放射能；原子能工业废料；地质；岩石；水文地质；第四纪；地层学；地下水；水质化学；英国；坎布里亚郡

Dissolution method could measure tritium in the uranium bed completely, and its standard deviation was 6.49%.

溶解法能够彻底地测量铀床中残留的氚，其溶解法测量的标准差为6.49%。

Pentagon spokesman Kenneth Bacon said quote we have not found any link between illnesses and exposure to depleted uranium unquote.

五角大楼发言人肯尼思·培根说，"我们没有在疾病和接触贫铀之间发现任何联系"。1991年海湾战争期间第一次在战斗中使用这种武器。

It is important to avoid the use of uranium compounds of unspecified isotopic composition.

要避免使用那种非专用的同位素成份的铀化合物。

At the same time, the scuttle structure of ablation shaped by the reverse process lead the layer of interest exposed to the air to suffer oxidation and infiltration of urania, which is favourable to interlayer oxidation and mineralization of uranium.

同时，反转作用形成的剥蚀构造天窗，使目的层裸露于地表，接受含氧含铀水的渗入和氧化作用，为层间氧化带及其铀矿化的形成创造了有利条件。

Of or relating to uranium, especially with valence lower than in comparable uranic compounds.

铀的铀的或与铀有关的，尤指比同类铀化合物化合价低的

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。