查询词典 rare earth

Morphology and grain size of alloys were analysed by SEM. The effect of current density, pH value, organic additives and rare earth samarium on cobalt content were studied, the adhesion of the film were tested by heating.

采用扫描电镜分析了镀层的微观形貌及晶粒尺寸，研究了电流密度、pH等工艺条件以及有机添加剂和稀土钐对镀层中钴含量的影响，采用加热实验法测定了镀层的结合力。

In addition, the second rare earth, such as Tb〓、La〓、Gd〓 and Y〓, was separatively doped in the europium carboxylic complex and replaced some europium ions. The luminescence properties were discussed to research the effect of the second ions to europium ions.

本文将第二种稀土离子Tb〓、La〓、Gd〓和Y〓分别掺入到铕的羧酸配合物中，让第二种稀土离子部分取代铕离子，并详细地研究了不同含量的第二种稀土离子对中心发光离子铕荧光性质的影响。

Luzong area ; shoshonite series ; geochemistry ; rare earth element ; tectonic setting

庐枞地区；火山岩；地球化学；稀土元素；构造背景

Rare-earth elements and depositional environments of the Sinian system in southwestern Hunan are discussed.

湘西南震旦系是在&江口裂谷&作用下形成的一套特殊地层。

The materials of crankshaft mainly use QT900-2 and QT800-2 high-strength rare earth, magnesium, copper, molybdenum, spherulitic iron, and auxiliary with forging steel crankshaft.

公司产品以 QT900-2、 QT800-2高强度稀土镁铜钼球墨铸铁的曲轴为主，锻钢曲轴为辅。

The effect of the rare earth nano-La2O3 added to the basic sulfamate solution on micro-electroforming process was studied.

将纳米稀土La2O3作为添加剂，研究其在微细电铸镍工艺过程中的影响。

The effects of the rare earth La2O3 on growth and reproduction of Tenebrio molitor L.

制备每kg麦麸分别含10，20，30，40.50，60，100，150，200和300mg氧化镧的饲料，用这10种剂量的饲料分别连续饲喂1日龄的黄粉虫Tenebrio molitor L。

Effects of roast temperature, roast time, the amounts of sodium carbonate on decomposition of bastnaesite concentrate and effects of leaching temperature, leaching time, concentration of hydrochloric acid, the amounts of hydrochloric acid on leaching ratio of trivalent rare earth and tetravalent cerium was studied systematically.

系统地研究了焙烧温度、焙烧时间和碳酸钠的加入量对氟碳铈矿精矿焙烧分解的影响及浸出时间、浸出温度、盐酸浓度和盐酸用量对三价稀土和铈的浸出率的影响。

The normal method was through the hydrolysis and poly-condensation process of tetravalent metal alkoxides and inside which rare earth dopants are simply performed by dissolving salts into initial sol, thus makes matrices being introduced a higher percent of hydroxyl groups, affects the resulting luminescence efficiency and balance of two phases.

普通的方法为将稀土盐导入金属烷氧基化合物的溶胶然后水解缩聚，这使得金属离子分离的最小化过程受限以及含羟基过多，极大影响了发射效率和两相均衡。

The influence of rare-earth metal ions on 23Na NMRspectra was investigated theorically and experimentally.

六从实验和理论上研究了稀土离子对23Na谱线的影响。

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。