The distribution and fractionation of Rare Earth element are the base for their usage as trace elements.
稀土元素在环境中的分布分异机制，是研究其作为地球化学示踪剂的重要基础和必要前提。
Rare earth base alloy with special characteristic make them potential candidates for function materials.
稀土基合金的特性能满足人们在特殊材料上的实际需求。
The results show that these cracks are caused by the inclusions of rare earth sulphur oxides and alumina distributing in mass in base steel for hot rolled wide strips.
结果表明：管坯裂纹是因热轧宽钢带基材中存在大量聚集分布的稀土硫氧化物和氧化铝夹杂所致。
In this paper, the effects of rare earth (re) and chromium on the high temperature oxidation resistance of iron base fluxing alloy spray welding coatings is reported.
本研究着眼于用稀土对价格低廉的铁基自熔合金粉末进行改性，以提高其抗高温氧化性能。
The influence of rare earth modification on the improvement of structure and corrosion resistance of Ni-base alloy for casting as well as on its casting properties is studied in this, paper.
本文研究了稀土变质处理对改善铸造镍基合金的组织和耐蚀性能与铸造性能的影响。
The rare-earth-magnesium-calcium alloy is a compacted agent more suitable for high sulfur base gray iron in cupola.
稀土镁钙合金是比较适合于冲天炉高硫铁水使用的蠕化剂。
The effect on improving the properties of Ni-base alloy was studied in this paper based on variation in adding amount of rare-earth metals.
本文试验研究了钇基稀土用于改善铸造镍基耐蚀合金性能的效果。
A new type of Y-base heavy rare earth modificator was developed.
研制了一种钇基重稀土变质剂。
In this paper, the effects of rare earth on the structure and properties of zinc-base alloy are studied.
研究了稀土对锌基合金的组织、性能的影响。
Alleviation mechanism of rare earth neodymium to the damage of aquatic plants by heavy metal cadmium was discussed primarily on the base of experimental result.
本文根据实验结果初步讨论了稀土钕减轻镉对水生植物毒害的机制。
Leaves of Dicranopteris dichotoma collected from a rare earth ore area and two control areas were separated into ether fractions, water fractions, base fractions and residues.
从稀土矿区和非矿区采集的稀土超量积累植物铁芒萁的叶片分离成醚溶物、水溶物、碱溶物和残余物四个组分。
The co precipitation behavior and the effects of impurity ions on the crystallization properties of yttrium base heavy rare earth carbonate were investigated.
本文对钇基重稀土碳酸盐沉淀过程中杂质铁、铝离子的共沉淀行为以及对碳酸稀土的结晶性能和结晶效果的影响进行了研究。
The aluminates are used as the base and the rare earth materials are used as the luminescence center and trap center. The excitation resource can be man-made light and sunlight.
它以铝酸盐原料为基质，以稀土材料作为掺杂元素形成发光中心和陷阱中心，激发光源可以是人造光源或者太阳光。
The impact test, the thermal shock test and the scanning electron microscopy were used to investigate the effect of rare earth oxide on the adhesiveness between the glass coating and the base metal.
利用斑点试验、点蚀试验、电化学测试及扫描电镜等方法 ，研究了熔敷温度、保温时间和稀土添加量等工艺参数对热熔敷法制备的玻璃涂层耐蚀性的影响 ，探讨了添加稀土提高玻璃涂层耐蚀性的机理。
The present invention relates to a rare earth ion double-doped or three-doped or three-doped yttrium oxide base up-conversion luminescence material and its preparation method.
本发明是关于一种稀土离子双掺杂或者三掺杂的氧化钇基上转换发光材料及其制备方法，属于发光物理学中的发光材料领域。
The present invention relates to a rare earth ion double-doped or three-doped or three-doped yttrium oxide base up-conversion luminescence material and its preparation method.
本发明是关于一种稀土离子双掺杂或者三掺杂的氧化钇基上转换发光材料及其制备方法，属于发光物理学中的发光材料领域。
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