查询词典 rare earth

In this paper, the effects of rare earth on the structure and properties of zinc-base alloy are studied.

研究了稀土对锌基合金的组织、性能的影响。

The commonly used permanent magnetic materials include ferrite, AlNiCo and rare-earth magnets.

现在常用的永磁材料主要有铁氧体、铝镍钴及稀土永磁。

Alpha decay commonly occurs in elements with atomic numbers greater than 83, but can occur in some rare-earth elements in the atomic-number range of 60 to 71.

发射α粒子的主要是重于铋(lutetium，原子序数83)和从钕(neodymium，原子序数60)到镏(Iutetium，原子序数71)的稀土元素，α衰变的半衰期，从1微秒(10-6秒)到约1017秒。

The effects of rare earth elements on Reformation of amination -catalyst for fatty alcohol were analyzed in this paper.

研究表明，稀土元素具有和镍相反的对高沸物成分的抑制作用，稀土元素的加入普遍提高了脂肪醇胺化反应的选择性。

Effect of acidity of aqueous phase and different ammoniation rates of extractant on the total mass transfer coefficients based on the water phase have been investigated The results showed that the mass transfer coefficients of Zn and Cd decreased but that of rare earth increased with the increasing of the ammoniated rate of extractant.

考察了料液酸度、萃取剂浓度以及萃取剂不同氨化度对锌、镉传质系数的影响。

Two methods for the determination of magnesium in rare earth-magnesium middle alloy by EDTA titrimetry, i. e. oxalic acid precipitation and ammonium hydroxide precipitation, were studied.

研究了分别采用草酸和氢氧化铵沉淀分离稀土镁中间合金中的稀土，EDTA络合滴定法快速测定电解稀土镁中间合金中镁的两种方法。

Experiments of the influence of rare earth element Lanthanum on the growth, chlorophyll a and oxygen production of cyanobacterium Anabaena azollae have been carried out.

对稀土元素镧对满江红鱼腥藻的生理影响和满江红鱼腥藻对镧的富集作用进行了研究。

Capabilities using rare earth compounds as environmentally friendly gasoline antiknock s were explored.

探讨了稀土化合物用作环保汽油抗爆剂的可能性。

The color of Apatite is often due to the presence of rare earth elements.

磷灰石的颜色常取决于存在的稀土元素。

The characteristics of major, trace and rare earth elements suggest a protolith association of ironrich dolomitic pelite,calcareous mudstone and greywacke intercalated by pelitic limestone and marlite, calcareousbearing 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 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。