查询词典 rare earth

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。

The application of dysprosium in NdFeB permanent magnet,rare earth giant magnetostrictive material,magneto optical recording media and other rare earth functional materials were introduced.

综述了金属镝的制备工艺及提纯方法；介绍了镝在钕铁硼永磁合金、磁致伸缩材料、磁光记录材料等新型稀土功能材料中的应用情况；讨论了金属镝的研究、开发、工业化生产等方面的问题，并提出了相关建议。

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。

19Th century 60's, with a large number of rare earth elements Europium was used for color TV industry, the role of rare-earth people gradually attention was the "industrial vitamin" of the title.

19世纪60年代，随着稀土元素铕被大量用于彩电业，稀土的作用逐渐被人们重视，获得了"工业维生素"的称号。

The orthogonal design method is used for preparation of rare earth fluoride by rare earth oxide(Gd_2O_3) fluorination with NH_4HF_2 in this paper.

采用正交试验法，研究了用氟化氢铵作氟化剂直接与稀土氧化物(Gd2O3)反应，制备稀土氟化物的工艺，确定了氟化的最佳工艺条件，并进行了分析讨论。

Mainly engaged in rare earth hydrometallurgy, Pyrometallurgical metallurgy, as well as Rare Earth Functional Materials research and preparation.

主要从事稀土湿法冶金、火法冶金以及稀土功能材料的研究和制备。

The recent progresses in the study on the fluorescence of rare earth complexes and application for the determination of the rare earth elements and organic compounds, as fluorescent probes for bioactive materials analysis and as detection means in separation technology were reviewed in detail. In chapter two, the absorption spectra of the 4f electron transitions of the complexes of the neodymium, praseodymium, holmium and erbium with fleroxacin in the presence of CPC have been studies by normal and derivative spectrophotometry.

本文以稀土元素配位化学为基础，以导数吸收光谱技术和荧光光谱技术为研究手段，利用新一代喹诺酮类抗菌药物，抗凝血类杀鼠药物的化学结构特点和大环化合物冠醚与金属离子突出的配位能力，以分析应用为目标，系统研究了这些化合物同稀土元素形成的配合物的光吸收和荧光特性，通过对体系实验条件的优化，使体系的稳定性、选择性和灵敏度得到显著改善。

Research progress on the application of rare-earth compound in plastic was briefly reviewed,The rare- earth compound for stabilizer of PVC andβ- nucleator of PP were introduced.

重点介绍稀土化合物在PVC塑料中用作热稳定剂、在PP中开发成功一种高效的新型β成核剂。

The rare earth complex dispersed in mesoporous silica displayed characteristic fluorescence emission of the pure rare earth complex, the fluorescence emission was increased, especially for diamine treated mesoporous silica. It showed that MCM-41 could effectively hinder the concentration quenching of Eu〓 ion.

对进入氨基修饰过的介孔二氧化硅中的Eu〓具有更好的荧光性能，说明介孔二氧化硅可以有效地阻止稀土离子的浓度猝灭。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了