稀土

In this work the formation ability of alkali zinc borosilicate glass doped Sm(superscript 3+) and the devitrification and the absorptive characters of glass were systematically studied.

主要研究了稀土钐掺杂碱硼硅酸盐玻璃的形成能力、玻璃的析晶产物以及稀土含量对玻璃吸收光谱的影响。

The experimental results of cyclic operation indicate that, sulfuric acid concentration in feed solutions decreases and sulfuric acid concentration in dialyzate increases in the operational process, furthermore, rejection ratio of rare earth is very high, and DD can achieve the purpose of sulfuric acid separation from rare earth sulfate solutions.

循环式结果表明，渗析过程中，料液中硫酸浓度不断减小，而渗析液硫酸浓度不断增大，而且由于对稀土具有较高的截留率，扩散渗析法能达到硫酸与稀土有效分离的目的。

Pr has little effect on the magnetic properties of (Nd1-xPrx)9.4Fe75.6Ti4B10.5C0.5 ribbons, ribbons with Br between 0.86T and 0.90T, iHc about 1000kA/m, andmax between 130kJ/m3 and 136kJ/m3 are all achieved with different ratio of Nd and Pr following their optimal crystallization annealing, which implies that it is possible to prepare high performance, low rare earth content nanocomposite Di-Fe-Ti-B-C permanent alloys with didymium directly.

Pr对合金薄带磁性能影响不大，直接利用稀土矿的次级分离产物Di来制备高性能低稀土含量纳米复合Di-Fe-Ti-B-C永磁合金完全可行，制备出的合金剩磁Br在0.86T与0.90T之间，内禀矫顽力iHc在1000kA/m左右，最大磁能积max介于130kJ/m3与136kJ/m3之间。

The polymer carriers,the immobilization of rare earth compounds,the properties of polymer-supported rare earth metal complex es and their catalytic characteristics in the polymerization of diene was reviewed with 25 references.

对聚合物载体的合成、稀土金属化合物的固定和聚合物载体－稀土金属络合物的性质及其催化双烯烃聚合的特征进行了论述。

The matrix composites for diamond tools were tested with such modern testing instruments and equipments as DTA-7 differential thermal analyzer, JCXA-733 electronic probe and scanning electron microscope, JEM 2000 FX Ⅱ transmission electron microscope, eXL energy spectrometer, and humidity test instrument. The analysis, comparison, and induction of the testing results prove the enhancing effects of the rare earth on the matrix composites: degeneration, micro-alloying, purification, and catalytic activation. The comprehensive function of these effects leads to the decrease in the porosity of the matrix composites and to the increase in such actual indexes as the flexural strength, hardness, and impact ductility of the whole rare earth Fe-based diamond tool materials.

由DTA-7型差热分析仪、JCXA-733型电子探针及扫描电镜、JEM2000FXⅡ型透射电镜、eXL能谱仪以及莱茨2AP高温显微镜材料润湿性测试仪等现代测试仪器设备对金刚石工具材料进行了测试实验，对测试实验的结果进行了分析、比较和归纳，证实了稀土对胎体材料具有变性、微合金化、纯化和催化活化等四大强化作用机理，这些机理的综合作用导致了胎体材料孔隙率的降低和整个稀土Fe基金刚石工具材料抗弯强度、硬度及冲击韧性等实际使用性能的上升。

In the paper a new technology of divorcement cerium from rich lanthanum rare earth in bastnaesite was studied .

本文对氟碳铈镧矿中铈与富镧稀土分离的新工艺进行了研究，分离出来的富镧稀土，经适当配比可满足制取储氢合金的要求。

According to XRD analysis, the high concentration doping of dysprosium ions in Fe3O4 can not be obtained due to the difference of ionic radius, and Fe^3＋ ions are replaced by only a small amount of dysprosium ions.

通过X射线衍射分析发现，由于离子半径的不匹配，Fe3O4中稀土离子的高浓度掺杂不能实现，仅有极少量的稀土离子取代了Fe3O4中的Fe^3＋。

Meanwhile, another production, which can deal with 500 tons dysprosium- ferroalloy and 35 tons terbium, will be under construction at the end of this year. The company planned to invest 15.8 million US dollars in all.

江西省龙南县是世界离子型稀土资源宝库，拥有独特的高钇矿资源优势，另一方面公司已有20年的稀土专业化生产历史，在生产设备和工艺技术方面均具良好基础。

It is in Inner Mongolia Rare Earth Group for the pillar to Baotou Rare Earth Research Institute based on a technology, equipment, analytical testing combined strengths, with a higher level of research and rich practical experience in the technical development team.

它以内蒙古稀土集团公司为支柱，以包头稀土研究院为依托，具有技术、设备、分析检测等方面的综合优势，具有一支较高研究水平和丰富实践经验的技术开发队伍。

Compared with rare-earths and their alloys, the perovskite-type manganese oxides exhibit higher chemical stability, higher resistivity that favors a lower value of eddy current loss and lower cost, and would be more suitable candidates for magnetic refrigerants at high temperature, especially the potential for application near room temperature.

与稀土以及稀土-过渡金属的合金比较，钙钛矿锰氧化物具有较高的电阻率有利于降低涡流损耗，以及较低的价格，因而这类材料有可能是高温，特别是室温磁制冷的较好候选者。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。