查询词典 uranium ore

Based on the theory of metallogenic system, the authors studied the whole proces s of formation, transformation and preservation of uranium deposits in the Taosh an orefield in the aspects of metallogenic background and environment, ore-forming elements, ore_forming process, and metallogenic products as well as their pre servation.

中文摘要：文章以成矿系统为理论基础，从成矿背景和环境、成矿要素、成矿作用过程、成矿产物及其保存等方面阐述了桃山矿田铀矿床形成-变化-保存的全过程。

Bioleaching may require added phosphorus and nitrogen if these are limiting in the ore materials, and the same process can be used to solubilize uranium.

如果在矿石中氮和磷不足，生物萃取则需要加入这些营养素，并且这一过程还被用来提取铀。

The results suggest that the uranium content and 234U/238U ratio s in the sandstone of the redox transition zone are generally higher than those of the oxidation and reduction zones,while the Th/U ratios of the transition zon e are lower than those in sandstone of the oxidation zone and the reduction zone .234U/238U and 230Th/238U ratios in uran ium ore samples are in the range of their ratios in the redox transition zone.

研究表明，与氧化带、还原带相比，氧化-还原过渡带具有较高U含量和234U/238U比值，较低Th/U比值；矿石样品中的234U/238U、230Th/ 238U比值位于过渡带范围内，234U/238U比值偏高区往往是过渡带分布区。

For developing a method to reduce the emanation coefficient of Rn in materials, emanation coefficient of Rn in geological uranous materials such as zircon, uranium-bearing ore, etc is measured. Heating is used to study the effect of heating temperature on emanation coefficient of Rn.

通过了解锆英砂、铀矿粉、石英砂铀矿粉混合物等含铀地质材料中222 Rn的析出情况，探索了降低这些材料中氡射气析出率的方法，并应用灼烧法研究了灼烧温度对上述材料中氡射气析出率的影响。

Therefore, studies on mineralizing hydrogeochemistry have become technique keys of inquiring to ore-forming condition of sandstone type uranium deposit.

因而，成矿水文地球化学研究就成为探讨该类型铀矿床形成条件的技术关键。

Particularly as a combined entity would dominate the world mining business as a leading producer of copper, aluminium, uranium and coking coal as well as rivalling Brazil's CVRD as the biggest supplier of iron ore.

特别是作为一个联合的实体，它在未来将成为世界上很多领域的主要制造商，比如铜、铝、镍和煤，同时将成为巴西在铁矿石供应上的有力竞争者。

The mathematical statistics in ore chemical composition show that the metal elements such as uranium and vanadium are related t.

矿石化学组分数理统计研究表明，铀、钒等金属元素与碳呈明显的正相关，反映了沉积环境具有蒸发盆地的特性，即泻湖体系。

Based on the observation and statistics on the calcareous sandstone in the ore host layer in Shihongtan uranium deposit , this paper finds that the calcareous sandstone occurs on and off near the top or wash surface of the sandbody as beads-strings lens along the layer and concentres in the area where the orebodies are rich .

摘要通过对十红滩铀矿床容矿层钙质砂岩的观察和统计，发现钙质砂岩呈顺层、断续的串珠状透镜体分布，产出空间位置为砂体的顶底部或冲刷面，而且较集中的分布在矿体发育区。

Based on the observation and statistics on the calcareous sandstone in the ore host layer in Shihongtan uranium deposit, this paper finds that the calcareous sandstone occurs on and off near the top or wash surface of the sandbody as beads-strings lens along the layer and concentres in the area where the orebodies are rich.

通过对十红滩铀矿床容矿层钙质砂岩的观察和统计，发现钙质砂岩呈顺层、断续的串珠状透镜体分布，产出空间位置为砂体的顶底部或冲刷面，而且较集中的分布在矿体发育区。

Through analysis of geological setting of ore beds and considering the prerequisite of heap leaching mining, the Pliocene of Kuqa-Ertatai area is predicted to be a prospect area of placer-type uranium mineralization.

通过对各含矿层地质背景分析，并考虑到地浸开采的前提条件，预测出库车－二八台地区上新统为可供地浸的砂岩型铀矿成矿远景区。

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。