查询词典 rare earth metal

The components comprise the following materials: 40 to 50 percent of GeO2, 20 to 25 percent of SiO2, 0 to 10 percent of Al2O3, 5 to 16 percent of MO or MF2, 0 to 10 percent of R2O3, and 1 to 10 percent of ZrO2; the M is one or more of the alkaline-earth metal ions, the R is one or more of the trivalent rare earth ions.

一种0.3～5um波段红外透过耐高温玻璃陶瓷材料及制备方法，成分包括GeO 2 40-50％，SiO 2 20-25％，Al 2 O 3 0-10％，MO或MF 2 5-16％，R 2 O 3 0-10％，ZrO 2 1-10％；M为碱土金属离子中的一种或几种，R为三价的稀土金属离子中的一种或几种。

Four series of metal bile acid complexes were synthesized, including transition metal cholate and deoxycholate complexes, rare earth cholate and deoxycholate complexes.

合成了四个系列的金属胆汁酸配合物，包括过渡金属胆酸及脱氧胆酸配合物，稀土元素胆酸及脱氧胆酸配合物。

Result showed that tetrasubstituted calix [4] arenes in lower rim were stronger complex abilities than bisubstituted calix [4] arene with transition metal, heavy metal and rare earth ions. But when introducing the aminephenolicalcohols in the 1, 3-bisubstituted calix [4] arenes, the complex abilities were improved.

结果表明：在Lower rim上四取代的杯[4]芳烃配体比1，3-二取代的杯[4]芳烃配体对过渡金属离子，重金属离子及稀土离子有更好的配位能力，但当1，3-二取代的取代基上引入醇胺链型配体时，对金属离子也有很好的配位能力。

The conductive coordinative polymolecular compounds,which contain thetransition metal ions〓and〓as central metal ions,transition metal ionsor rare earth ions as counter cations and〓or〓as ligand,have been synthesized.

合成出以过渡金属〓、〓、〓、〓和〓作为中心金属离子、过渡金属或稀土离子作为抗衡阳离子、有机小分子〓或〓作为配体的导电性配位高分子化合物，它们均为能在空气中稳定存在且难溶和难熔的无定形粉末状固体。

In order to investigate the relationship between the open-chain ligands and metal ions, and the possibility of the metal complexes used as electroluminescent materials, a new naphthol schiff base ligand which is a open-chain crown and its four transition metal complexes, a new amide type tripodal ligand containing heterocyclic ring, two tripodal ligands (H〓L〓 and H〓L〓) containing phenol schiff bases and their rare earth complexes were synthesized and characterized.

为了进一步研究和探讨开链配体与金属离子的配位作用，以及金属配合物作为电致发光材料的可能性，我们设计合成了含萘酚环的Schiff碱开链冠醚H〓L〓及四种过渡金属(Zn、Ni、Co、Cu)配合物，两个含酚羟基的Schiff碱三足配体H〓L〓和H〓L〓及稀土配合物，一个含杂环的酰胺型三足配体L〓，培养了配体L〓的单晶，确定了其晶体结构。

The results showed that the addition of the rare earth alloy powder can refine and disperse oxide particles. Through energy spectrum analysis, it was found that the rare earth congregates to Ti and the interface between metal matrix and diamonds. The active La and Ce in alloy powder can reduce the oxide film on Ti particles, increase the reactivity of Ti, and promote the reaction between Ti and diamond.

通过扫描电镜，能谱分析和X射线物相分析、比较和归纳，发现加入适量的稀土-Ni合金粉，使胎体中的氧化物颗粒细小、弥散；在添加稀土合金粉的胎体中，稀土向Ti富集并向金刚石与金属基体界面偏聚。

We also obtained rare-earth ions and transition metal ions doped 〓 in the hydrothermal system and found there exist a reductive atmosphere which can reduce the rare-earth ions.

结果发现，在水热体系中存在一种还原气氛，稀土离子可以被还原为低价态，存在变价的过渡金属离子锰离子在产物中还是保持原来的低价态。

Precious metal and rare metal reclaim use: Use at transferring the depart of metal and rare-earth element and rich collect; In rare earth at present mineral products is machined and Japan of respect of precious metal extraction has begun to apply.

贵重金属和稀有金属回收利用：用于过渡金属和稀土元素的分离和富集；目前在稀土矿产加工和贵金属提取方面日本已经开始应用。

The calculations on the binding energy and the population analysis of the ribose-Ln complexes were made by using the coordinates obtained from its single-crystal structures. Theoretical interpretions on the coordination between ribose and rare-earth metal ions were given by the results of the calaulation.

利用本论文得到的一系列的核糖—稀土配合物的单晶结构数据，对各配合物分子的结合能、配合物中各原子的净电荷布居以及稀土金属离子中各原子轨道在成键中的作用等方面内容进行了量子化学计算，并为核糖与稀土金属离子的配位作用提供了理论解释。

The effect of addition rare-earth metal,Ca and Mg elements on the microstructure,toughness of and the formation of intragranular acicular ferrite in hot affect zone of large heat-input welded low alloy non quenched-tempered steel plate was investigated.

研究了低合金高强度非调质中厚板钢中添加稀土和Ca、Mg微量元素对大线高能焊接热影响区显微组织微细化和晶内针状铁素体形成的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。