查询词典 rare earth

Through analyzing the distribution characteristics and geochemical behaviors (such as macroelement, rare earth element and microelement) of volcanic rock here, structural transformation characteristics of Jiyang-Changwei depression in Cenozoic are studied using new geochemical theories and principles.

通过对火山岩分布特征、常量元素、稀土元素、微量元素地球化学特征分析，运用新的地球化学理论和原理，探讨了济阳-昌潍坳陷新生代构造转换特征。

The effect of mixture of rare earth oxides on the sintering properties,microstructure and mechanical properties of magnesia refractory were studied.

研究了添加Y_2O_3的混合稀土氧化物对镁质耐火材料的烧结性、力学性能和显微结构的影响。

Department of the use of high-quality ferrite magnetic materials or with the rare earth magnet compound formed, drum table average magnetic induction 100 ~ 600mT.

磁系采用优质铁氧体材料或与稀土磁钢复合而成，筒表平均磁感应强度100~600mT。

In this paper,the magnetic suspension applied characteristics of Rare earth Permanent magnet material in the vibration isolating system are studied,and the method with which spatial flux density and magnetic force is calculated quantitatively is presented.

对稀土永磁材料在隔振系统的磁悬浮应用特性作了研究，给出了永磁系统空间磁密及磁力定量计算的方法，设计了一种新型磁悬浮式隔振装置，在运用试验及应用人工神经网络的方法对其良好悬浮特性和非线性刚度特性进行了综合分析的基础上，引入实验修正系数完善了理论模型，为磁悬浮隔振器的设计提供了理论依

OBJECTIVE:To study the effect of rare-earth elements on cell and tissue cultures of medicinal plants.

目的：研究稀土元素对药用植物细胞组织培养的作用和意义。

Based on application state and refinement mechanism of treatment agent of aluminum alloy mele,the paper analyses the effect of rare earth,Al—Ti—B interalloy and Re—AlTiB interalloy on cast structure of aluminum alloy,then the application of compound Re—AlTiC interalloy was studied.

在叙述铝合金熔体处理剂应用现状与细化机理的基础上，分析了稀土添加剂、Al—Ti—B中间合金细化剂以及Re—AlTiB中间合金对铝合金铸态组织的影响，接着对复合添加剂稀土铝钛碳中间合金作了应用研究。

A metallic bond layer material added with rare-earth La used for a high temperature brazing CBN grinding wheel belongs to the technical field of metallic material engineering and relates to the technical field of superhard tool high temperature brazing.

一种添加稀土La的高温钎焊CBN砂轮用金属结合剂层材料，属于金属材料工程技术领域，涉及到超硬工具高温钎焊技术领域。

The rare-earth and strontium were added into the metamorphose alloy in exploratory experiment, but it wasnt succeed.

探索试验是向合金中添加稀土和锶进行复合变质，结果没有取得多大成效。

The six major mercury deposit s in Guizhou Province are different fromeach other in minor element characteristics of ores and cinnabar,and theirdispersed elements and rare earth elements,in particular,have respective dis-tinguishing features.

贵州6个不同类型的主要汞矿床，其矿石和辰砂的微量元素，特别是其中的分散元素和稀土元素有着明显差别，表明各汞矿床的成矿物质来源是不相同的。

Based on the complexity of the sources for the sediments in the Okinawa Trough, the sequential extraction procedure was applied to the hydrothermal influenced sediments in the core H9 recovered from the middle Okinawa Trough. Five fractions, including exchangeable, bound to carbonates, bound to iron and manganese oxides, bound to organic matter, and residual were acquired. Based on detailed analysis for major, minor and rare earth element compositions, the distributions of the elements in various speciations of the sediments were determined and the controlling mechanism was discussed. The variations of hydrothermal signatures in the core, partitioned from the terrigenous, volcanic and biogenic materials, have been demonstrated and the accumulation rates of some elements were evaluated.

本文针对冲绳海槽多种物源沉积作用混杂的特征，采用顺序淋滤萃取方法对海槽中部受热液活动影响的H9岩芯沉积物进行了分离，将沉积物中分为可交换态、碳酸盐结合态、铁锰氧化物结合态、有机结合态和残渣态五个部分，并对各个结合态中常量、微量和稀土元素组成进行了分析，确定了不同元素在不同结合态中分配的比例，分析了控制不同元素进入沉积物的主要机制。

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。