查询词典 rare earth metal

Determination of total content of rare earth in rare earth drier and content of hydroxyl in solvent- free alkyd resin are introduced and then compared with the traditional methods.

介绍了稀土催干剂中总稀土含量和无溶剂醇酸树脂中羟基含量的测定，并和传统方法作了比较。

The method comprises steps: dissloving relative rare earth oxidant into nitrate to prepare rare- earth azotic acid solution, adding solid nitrate, boracic acid, citrate and urea according to proportion, mixing, calcinating with burning method and getting final product.

制备时，将相应的稀土氧化物溶于硝酸，配成稀土硝酸盐溶液，按计量比加入固体硝酸、硼酸、及柠檬酸与尿素，混合均匀，利用燃烧法灼烧，即得产品。

"In September 2008 around 99.9 percent purity cerium oxide is 18 yuan / kg, while the highest sold over the past 30 yuan / kg," said董森"high-tech electronics, laser, communications, superconducting materials, such as the need for Rare Earth, but China's rare-earth prices has not gone up, not their own pricing, it is a disadvantage."

"在2008年9月前后，纯度为99.9％的氧化铈为18元/公斤，而过去最高卖到30元/公斤，"董森华说，"高科技电子、激光、通讯、超导等材料都需要稀土，但中国的稀土价格并没有水涨船高，无法自己定价，很吃亏。"

We composed the active cyclostyle polymerand then inserted the rare-earth to the cyclostyle polymer by sol-gel method. Then weprepared the new type nanometer oganic rare-earth compounds.

我们设计合成了纳米稀土金属溶胶和活性模板聚合物，然后用溶胶-凝胶法在活性模板聚合物上导入纳米稀土金属化合物，进而制备了新型纳米有机稀土金属复合物。

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。

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。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。