查询词典 rare earth

The characteristics of major, trace and rare earth elements suggest a protolith association of iron-rich dolomitic pelite, calcareous mudstone and greywacke intercalated by pelitic limestone and marlite, calcareous-bearing arkose, which was deposited in the setting of dry, intertidal or laguna with insufficient supply of the terrigenous detrital material.

常量元素、微量元素和稀土元素的分布特征说明是一套由富铁白云质泥岩－钙质泥岩、钙质杂砂岩夹泥质灰岩、泥灰岩－含钙质长石砂岩组成的沉积建造，形成于干旱气候、潮间带或泻湖、陆源碎屑供给不足的环境中。

The HEED, XRD, and XPS results confirmed the forming of intermetallic compounds between silver and rare earth. As far as silver and lanthanum be concerned, the format of intermetallic compound is AgLa.

由此，本文首次提出了稀土元素在稀土金属间化合物中的能量传递模型，认为稀土与银金属间化合物的4f能级位于费米能级附近下方，部分局域化且与导带部分耦合。4f能级与导带能级之间的电子跃迁是稀土元素在Ag-BaO薄膜中传递能量的方式，也是光电发射增强效应的来源，而4f电子的光吸收截面随入射光子能量的增加而增大的特点则是"蓝强"现象的原因。

When doping the rare earth elements in nano-TiO〓, the relationships between the photocatalytic activities and the ratio of electronic affinity to ionic radius of doped atomic ion were studied.

在稀土元素对纳米TiO〓光催化剂的掺杂研究中，发现催化活性与掺杂元素的稳定氧化态的电子亲和势与离子半径的比值Ea/r有较好的相关性，而与Ea/r〓的相关性相对较低。

The invention is suitable for the leaching exploitation field of uranium, copper, aurum, rare earth and so on.

适用于铀、铜、金、稀土等矿物的溶浸开采领域。

Results of structural analyses indicated that the formed complex structure had the effect of steric hindrance on oxidation, and rare earth elements were of the utility to terminate autoxidation chain reaction.

结构分析结果表明形成的络合结构有阻碍氧化的立体效应，而稀土元素具有终止自动氧化链式反应的效用。

Some new heat stabilizers were exploited such as rare earth, organic antimony , autunite/zinc compounds, hydrotalcite and so on.

随着环保意识的逐渐加强，传统的PVC热稳定剂如铅盐类稳定剂已受到了一定的限制，相应地开发出了一系列新型的PVC热稳定剂，包括稀土类、有机锑类、钙锌复合类和水滑石类热稳定剂。

Synthesis of Rare Earth Complexes with 2,6-Dicarboxilic Acid Pyridine-N-Oxide and the Study of Their Bacteriostatic Effect.

张永平，韩俭，唐宁，等。2，6-二甲酸吡啶氮氧化物稀土配合物的合成及其抗菌活性的研究。

All the volcanic rocks present younger K-Ar age (less than 5Ma), which can be termed as Cenozoic rocks. In general speaking, volcansim can be dividied into two eruptive stages. In the first stage, volcanic rocks for Pliocene epoch (4. 4-5Ma) consist of basanite and tephrite, which distributed on Mt. Crater, Cape Bird, and southern bank of Bonney Lake; In the second stage, volcanic rocks for Quaternary (less than 1 Ma) are mainly composed of latite, which are distributed on Cape Rodeys and Cape Evens.On the basis of geochemical data such as major elements, trace elements , rare earth elements, isotope, microprobe analysis, combined with main achievement taken by previous researcher in this area, conclusions are drawn basically as follows

所喷发的火山岩K-Ar年龄值均小于5Ma，为新生代火山岩，大体上可以分为两个喷发阶段，第一个阶段为上新世火山岩(年龄值为4.4-5.0Ma)，主要由碧玄岩和碱玄岩组成，分布于罗斯岛上的克雷克特山、鸟角和泰勒谷的博尼湖南岸；第二阶段为第四纪火山岩(年龄值均小于1Ma)，主要由安粗岩组成，分布于罗斯岛上的罗德角和伊万思角，通过主要元素、微量元素、同位素结合电子探针以及前人的研究成果，我们大体上可以得出如下认识

A bivalent and trivalent metallic element of the rare earth group.

稀土属二价和三价金属元素。

At last, by using VB6.0, we have written the aided design program of the double-voltage hybrid excitation rare earth permanent magnet synchronous generator. Tow sample BLONDEL have been designed.

最后，本文利用高级计算机语言编制了人机界面友好的双电压复合励磁稀土永磁同步发电机的计算机辅助设计程序，并研制了两台样机。

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