查询词典 trace elements

This dissertation is characterized with the application of petrological methods in the study of trace elements in coals. The modes of distribution of trace elements in macerals and minerals in coals are proposed by means of the integration of two well-operated technologies, sink-float test and maceral analysis.

本文的主要特色在于将煤中微量元素研究与煤岩学方法紧密结合，运用浮沉试验及煤岩分析两种成熟技术，有效地解决了煤中微量元素在各种组分中的分布研究问题。

Modes of occurrence of trace elements in coals from representative coalfields in China It is the core of the dissertation to investigate the modes of occurrence of trace elements in coals from typical coalfields in China.

中国煤中大多数微量元素平均含量，与世界范围内煤中微量元素平均含量相比，基本在同一水平线上，中国煤炭利用造成的微量元素污染问题，主要是由于落后的用煤方式、累积效应及有害微量元素局部异常富集引起的。

Greywacke samples of Middle and Late Triassic collected from Hongcan well in Zoige were analyzed by ICP-MS for REE and trace elements. The result shows that these samples were originated continental crust because they enriched in Cs,Rb,Th and high REE contents and depleted in Sr,Nb and Ta. Negative Eu anomalies and strong differentiation between heavy and light REE are significant. Both the contents and ratios of the inactive trace elements and the results based on discriminant diagrams indicated that the sedimentary tectonic setting of Zoige Basin was dominated by continental island arc and the sediment in this basin was strongly affected by continental island arc between Middle and Late Triassic.

对若尔盖地区的红参一井内中三叠世中期和晚三叠世中期的37个杂砂岩样品进行了ICP-MS微量元素分析，其结果显示这些砂岩样品具有Cs、Rb、Th等元素富集，Sr、Nb和Ta亏损，稀土元素总量较高，且负Eu异常和轻重稀土分异明显等壳源物质的特征；而微量不活动元素的含量及比值特征以及构造环境判别图解的判别结果表明：若尔盖盆地中三叠世中期到晚三叠世中期的沉积构造环境为大陆岛弧，沉积物源受到大陆岛弧的强烈影响。

The ancients said:"longevity in air can cause longevity", so pine pollen can be called "King of pollen." 2, full nutrition are pine-hung pine pollen-tipped stamens of the sperm cells, bears a heavy pine reproduction, which is the essence of pine, Beijing 301 Hospital of trace elements by the Research and Technical University of Munich, Germany (Europe's best-known trace elements Research Center) in cooperation of pine pollen nutrients all made the most scientific testing, during the surprise discovery of pine pollen longevity life contains all the necessary nutrients, and with a reasonable and be able to fully complement and balance the human body nutrition.

古人称：&松柏之气可以使人长寿&，所以松花粉堪称&花粉之王&。2、全营养松花粉是松树雄花蕊的精细胞，担负着松树繁衍的重任，它是松树的精华，经北京301医院微量元素研究室与德国慕尼黑技术大学（欧洲最著名的微量元素研究中心）合作，对松花粉所有的营养成份作了最科学的检测，期间惊奇的发现，松花粉里含有长寿生命体所需的全部营养成份，且搭配合理，能够全面补充、均衡人体所需的营养。

Algae essence organic iodine feed additive is made from kelps, it's completely natural, it contains algae sulfated polysaccharide, superoxide dismutase, etc 15 active substances, and more than 10 trace elements including calcium, magnesium, and cobalt, etc, it's called "natural active substance, and treasury of trace elements".

海藻精有机碘饲料添加剂取之于海带，完全天然，含有海藻硫酸多糖、超氧化物歧化酶等15种活性物质，还有钙、镁、钴等10多种微量元素，堪称&天然活性物质、微量元素宝库&产物。

According to the strata about the trace elements in coal of China ,the different background value of trace elements in different parts of China were d rew out.

由于分析样品分布不均和采用的测试方法各不相同，本文的数据还不能准确地代表中国煤中微量元素的平均丰度值。

It is well known that Huang-huai-hai Plain flourished around Han and Tang dynasties, not only boasted of the highly developed agricultural economy, handicraft industry and cultural education, but also of the population quality and proportion. while the physiognomy of the Plain has changed greatly since Song and Yuan dynasties due to the frequent deluge and the river course change of Yellow River, which caused the changes of the trace elements amount in the plain\'s soil, especially the decrease of virtual zinc which caused the cultural developing process to stagnate gradually after Song and Yuan dynasties. Trace elements like a invisible hand worked uniquely on cultural developing process.3The geographical environment and the morbid population of Lin Xiang Kingdom in Sun-Wu Kingdom Period.

二地理环境下的土壤微量元素的变化状况与历史时期黄淮海平原文明进程的关系：众所周知，汉唐时期是黄淮海平原地区文明程度最高的时期，不仅农业经济、手工业经济和文化教育高度发展，而且人口素质和人口比重也是占据极为重要地位；但是，由于黄河的频繁泛滥和改道，不仅造成了黄淮海平原地貌的巨大变化，而且也引发了黄淮海平原土壤微量元素的变化，以致有效锌严重缺乏，从而使得宋元以后的黄淮海平原的文明进程逐渐停滞下来；而在此过程中，土壤微量元素锌像一支看不见的手在起着独特的作用。

All the volcanic rocks present younger K-Ar age (less than 5Ma), which can be termed as Cenozoic rocks. In general speaking, volcansim can be dividied into two eruptive stages. In the first stage, volcanic rocks for Pliocene epoch (4. 4-5Ma) consist of basanite and tephrite, which distributed on Mt. Crater, Cape Bird, and southern bank of Bonney Lake; In the second stage, volcanic rocks for Quaternary (less than 1 Ma) are mainly composed of latite, which are distributed on Cape Rodeys and Cape Evens.On the basis of geochemical data such as major elements, trace elements , rare earth elements, isotope, microprobe analysis, combined with main achievement taken by previous researcher in this area, conclusions are drawn basically as follows

所喷发的火山岩K-Ar年龄值均小于5Ma，为新生代火山岩，大体上可以分为两个喷发阶段，第一个阶段为上新世火山岩(年龄值为4.4-5.0Ma)，主要由碧玄岩和碱玄岩组成，分布于罗斯岛上的克雷克特山、鸟角和泰勒谷的博尼湖南岸；第二阶段为第四纪火山岩(年龄值均小于1Ma)，主要由安粗岩组成，分布于罗斯岛上的罗德角和伊万思角，通过主要元素、微量元素、同位素结合电子探针以及前人的研究成果，我们大体上可以得出如下认识

The geochemical characteristics and depositional environment of Pengcuolin chert are studied based on the field investigations and analysis on major elements, trace elements and rare earth elements.

通过野外地质调查和系统的岩石化学、常量元素、微量元素以及稀土元素等研究，探讨了藏南彭错林硅质岩的地球化学特征及其沉积环境。

To determinate the inorganic elements levels in Semen Cassiae,and to study on the pharmacologic substance basis and the influence parching processing on the content of elements of it,trace elements and heavy metals in Semen Cassiae and its preparation Cultivated in different areas were determined by atomic fluorescence spectrometry and inductive coupled plasm a atom emission spectrometry.

为测定生决明子中无机元素水平，探讨其药效物质基础及炒制对其含量的影响，采用原子荧光法和等离子发射光谱法等测定了不同产地、批次的生、炒决明子中重金属及微量元素的含量。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。