查询词典 trace element

A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

一种二价或三价金属元素，坚硬的银白色铁磁体，植物动物营养中的微量元素。

Silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.

一种二价或三价金属元素，坚硬的银白色铁磁体，植物动物营养中的微量元素。

Additionally, some trace elements in coals, which indicate the paleoclimate and the types of bog in coal-forming period, can also show hydrocarbon generating potential of coal, such as Cu which has a strong affinity to organic macromolecule in coals. Cu is a fades element, and may be an indicator element of hydrocarbon generating potential.

其中Cu既是一个有着与煤的大分子物质较强亲和力的元素，又是一个可以显示古气候古成煤沼泽类型的"指相"元素，因而在指示煤的生烃潜力方面可能具有普适性。

Combined with related rare earth element and trace element geochemistry of Huangshaping granites and ore-bearing skarn, it is concluded in this paper that the age of 154 Ma should represent the metallogenic epoch of the deposit, and that there existed a close relationship between the ore-forming process of the deposit and the granite porphyry, which were both formed during the peak stage of Early Yanshanian large-scale rock-forming and ore-forming activities in South China.

结合黄沙坪岩体及含矿硅卡岩型矿体的稀土及微量元素地球化学特征，得出以下认识：该矿床的成矿年龄在154Ma左右；成矿作用与花岗斑岩关系密切，它们都是华南燕山早期大规模成岩成矿作用高峰期的产物。

The results show that the electrochemical window is 3.40V, the crystal grain of new deposit aluminum is ideal, and the boundary of crystal grain is perfect. The main element is aluminum and trace element is oxygen on the surface of cathode.

研究结果表明：铝基离子液体Br-AlCl3的电化学窗口为3.40V；扫描电镜分析表明，阴极新生态的铝晶粒生长完整、晶界完善；X射线能谱分析阴极表面新生态铝的结果显示主元素为铝，微量元素为氧。

The kernel point of the mountainous area high dip angle strata 3D seismic data processing is how to solve 3D reflection surface element divergence ,to increase reflection surface element trace gather inphase stack .

山地大倾角地层的三维地震资料处理的核心问题是如何解决3D反射面元发散，增加反射面元内道集同相叠加，而静校正技术和偏移成像技术正是解决这一问题的关键技术。

In general, this issue belongs to the category of environmental history. While when it comes to some specific issues, trace element in soil is the cut-in point to study the changes of Chinese ancient society. At the present time, such research method hasn\'t been applied in history studies domestic and abroad so far. Therefore, the studies of the paper are only exploratory and immature researches.Three issues are concerned here:lTrace element in soil under geographical environment and the Hun and the Hsienpei\'s levirate.

本文主要探讨地理环境下的土壤微量元素与中国古代社会变迁的关系问题；在总体上，这一专题是属于环境史的范畴；但在具体问题上，则是以地理环境下的土壤微量元素问题做为切入点，来研究中国古代社会变迁问题的；就目前的情况看，这种研究方法在国内外历史学的研究中尚无先例；所以，本文的相关研究只能是带有一些探索性的、不成熟的研究。

Base on the simulation experiments , hazardous trace element from coal mining rocks results have shown that the lixivium concentration affected by leaching times, pH, leaching temperatures and most parts of the hazardous element are stable.

结果表明，有害元素大部分以稳定态存在，浸出液浓度受浸泡时间、酸度、浸泡温度影响。

In principle all elements from boron to uranium can be determined, and trace element analysis and the determination of minor and major element concentrations can be performed on the same sample.

从原理上来说，可以测定从铍到铀的所有元素，在同一样品中可以同时进行痕量元素分析和次成分和主成分元素浓度的测定。

The gabbro-diorites have high light rare earth elements, low heavy rare earth elements and weakly positive Eu anomalies in chondrite-normalized rare earth element curves, and with high LILEs and relative low HFSEs in primitive mantle-normalized trace element spider diagram.

稀土元素球粒陨石标准化曲线显示其具有富含轻稀土元素、贫重稀土元素以及微弱的Eu的正或负异常的特点。微量元素原始地慢标准化蛛网图上，岩体具富含大离子亲石元素，明显亏损高场强元素（Nb、Ta、Zr、Hf和Ti）等特点。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。