查询词典 rare earth

The fluorescing properties of the final products were characterized by PL spectrometer. The effect of the calcinations temperature and the amount of adding rare earth element to the property of the red shift and blue shift of powders had been studied.

在发光特性的研究中，本论文利用PL光谱仪对所合成之萤光粉体进行量测，并探讨不同温度、及掺入稀土元素的量之影响及波长红位移、蓝位移现象。

The activation property of AB〓 type Laves phase alloys can be improved by means of small addition of rare earth element La.

对AB〓型锆系Laves相合金，添加少量稀土可明显改善合金的活化性能。

An analysis was made of the structure and properties of plant dye s and the mechanism of mordanting of rare earth.

分析了植物染料的结构与性能、稀土的媒染机理。

(1) The maximum information Imax from new Screen-film which had fewer film mottles was the largest.(2) Imax done from the rare earth screen-film system was the smallest.

应用稀土增感屏组成的屏-片组合体系，形成照片斑点多，检测到的Imax值小，提供给医师的X线照片影像的信息量就小。

The ultramafic rocks outcropped at the Altyn region are all harzburgites. Remant grains of primary minerals have melted residual texture and elastic deformation texture under high temperature and pressure. The whole-rock analyses show their low TiO〓 contents (0.01～0.04%), low Al, Ca and high MgO contents and wide Mg〓 range (89.35～95.57). Rare earth patterns have two types, namely tabacco pipe-shped and LREE-shaped, of which the former is often seen. The chondrite-nomalized Yb values of these analyses are all lower than 1. The spinels have low Ti and high Cr content and most spinels have Cr# higher than 60. All of the above characteristics show that the ultramafic rocks in the Altyn fault zone are components of metmorphic peridotites of ophiolite from depleted mantle source and most ophiolites from this zone belong to supra-subduction zone type ophiolite with a few mid-ocean ridge basalt type.

阿尔金露头区的超基性岩全为方辉橄榄岩，残余的新鲜矿物颗粒发育有熔融残余结构和高温高压下塑性变形结构，全岩分析显示样品TiO〓的含量低，为0.01～0.04％，具有低的Al和Ca，MgO含量高，Mg〓为89.35～95.57；稀土配分型式有两种，即烟斗型和LREE亏损型，前者占绝大多数，Yb球粒陨石标准化后的值全都小于1；尖晶石低Ti高Cr，大部分尖晶石的Cr〓大于60，上述特征说明阿尔金超基性岩是蛇绿岩的地幔橄榄岩成员，来自亏损的地幔源区，阿尔金蛇绿岩大多属于俯冲带之上型蛇绿岩，有少量的大洋中脊型蛇绿岩。

China wisely outguessed the rest of the world by recognizing the value of rare earth metals as far back as the 1980s, and committed investment to mining them.

中国在这方面比世界其他国家洞烛先机，因为早在80年代，中国就已经看出稀土金属的价值，并提拨资金开发它们。

China wisely outguessed the rest of the world by recognizing the value of rare earth metals as far back as the 1980s, and committed investment to mining them.

中國在這方面比世界其他國家洞燭先機，因為早在80年代，中國就已經看出稀土金屬的價值，並提撥資金開發它們。

2Microstructures and constituent segregation phenomenawere analyzed by optical microscope and scanning electronmicroscope.Tb segregates in rich rare-earth phase obviously.

用光学金相，扫描电镜分析了合金的显微组织结构与成分偏析，发现稀土Tb明显偏析于富稀土相中。

The properties of ISEsand sensitizing luminescence of rare earth cations were also studied.

超分子化学是当前化学、生命科学和材料科学的前沿研究领域之一。

On this base ,the carrier of the rare-earth metal and oxidized lead is sleeted according to chinds special characteristic and exhaust purifying box in multi-use experiment was designed .

在此基础上，结合我国国情选用了稀土催化剂、氧化铝载体，设计了复合式试验用尾气净化消声器。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。