稀土金属

In addition, comparing to the alkali metal catalyst, the Ce overlayer is difficult to be removed even heating to 700K.

此外，和碱金属/半导体的情况有所不同，700K的退火也不能有效地除去半导体界面的稀土金属覆盖层。

Promotion effects of alkaline earth metals and rare earth metals on catalytic activity and coking resistance of the catalyst are also described.

阐述了碱土金属和稀土金属助剂在提高催化剂的重整活性和抗积炭能力方面的作用。

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。

The effect of alkaline metal, alkaline-earth metal or rare-earth metal oxides doping to Pd/γ-Al〓O〓 on the properties of supported palladium catalysts were investigated.

研究含氧条件下单Pd催化剂上进行丙烯选择催化还原NO的反应，考察浸渍法制备的Pd/γ-Al〓O〓催化剂中加入碱或稀土金属氧化物助剂对NO转化率的影响，并对催化剂进行了XRD表征及在氧化气氛中饱和吸附NO后的TPD研究。

Long-range excited energy transfer from carbazole to RE complexes was observed through static PL investigation.

通过对聚合物的荧光光谱研究，观察到从咔唑基到稀土金属配合物的长程能量转移。

This is the disadvantage of rare earth catalyst.

这是稀土金属作为催化剂不利的一面。

It is a vapour discharge lamp containing a mixture of dysprosium iodide and halmium iodide.

镝灯是一种稀土金属卤化物灯，是利用在碘化镝、碘化钬的蒸汽中放电发光而制成。

Using 1,3-dicyanobenzene as a precursor, we have obtained two coordination polymer of rare earth metal bridged by isophthalato ligand, Eu complex (4) and Sm complexe coordinated (5). X-ray single crystal diffraction investigation confirms that complex 4 and 5 are isomorphous with near isostructural 〓 unit.

以1，3-苯二氰为前体，合成了两个新的稀土金属与间苯二甲酸根配体桥联的聚合物：间苯二甲酸根配体配合的铕和钐化合物，4和5.X-射线衍射结构分析表明化合物4和5均具有〓基本结构单元且两者结构类似。

The thirty rare earth elements are composed of the lanthanide and actinide series.

三十个稀土金属是稳定的La系和Ac系元素。

While roughly a third of US oil comes from such unstable places as Nigeria and the Middle East, rare earth metals known scientifically as lanthanides, are controlled almost exclusively by China.

尽管美国将近三分之一的石油来自奈及利亚和中东这一类不稳定的区域，可是元素名称为镧系元素的稀土金属，却几乎完全是被中国垄断了。

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。