pivotal methods是什么意思

网络释义

用法例句

A new method for plotting metal predominance area diagrams, activity term method of base element, is proposed in this paper.

介绍了新开发的优势图计算机绘制系统，提出了绘制优势区图的一种新算法——主元素活度项法，说明了绘制含一种金属的三元系及含两种金属的四元系的优势区图绘制的算法原理，解决了四元系中双金属化合物的归属问题。

Geochemistry of major elements from the Cretaceous Taoqihe Formation-Taipinglinchang Formation sandstones in the Sunwu-Jiayin Basin;

孙吴-嘉荫盆地白垩系淘淇河组-太平林场组砂岩主量元素的地球化学特征

In this paper a method for the direct determination of the major elements(S,Cl,K,Ca)in brine sam- ples by the energy dispersive X-ray fluorescence spectrometry is reported.

用模拟卤水建立一套能量色散X射线荧光光谱法测定卤水中硫氯钾钙主量元素含量的方法。

Major element characteristics of sandstones from different kinds of basin are a function of particular provenance types and tectonic environments, and provenance analysis of basins may be performed using major element diagrams.

一定的砂岩地球化学特征对应于特定的源区和构造环境,利用主量元素图解可以进行盆地物源分析。

The β2-isomer Keggin structure heteropolytungstoarsenate complexes containing main group elements have been prepared and characterized by ICP,UV,IR,XPS,XRD and 183W NMR.

合成了4种主族元素取代的钨砷杂多配合物,通过ICP和TG曲线确定其通式为:K11,12〔M(AsW11O39)2〕。

The results show that the new compounds are of Keggin structure,and the main group elements have already entered into the skeletons of new compounds.

结果表明,新配合物具有典型的Keggin结构,且主族元素进入到配合物的骨架中。

The compositions of major elements from the rocks are consistent with those of basalt and have evolutional current of tholeiite.

岩石的主量元素组成和玄武岩一致,并且具有拉斑玄武岩演化趋势。

The Principal Component Analysis of Central Trace Elements in Four Shellfish

4种贝类主要微量元素的主成分分析

Determination of Primary and Minor Elements in Manganese Ore by X-Ray Fluorescence Spectrometry and Sampling by Fusion

X荧光熔片法测定锰矿中的主元素和微量元素

A trace element.

痕量元素，微量元素

The Relationship of Main Mineral Elements Contents and Yield, Quality of Early Bearing Walnut;

主要矿质元素含量与早实核桃产量质量的关系

Usage: Shea butter and microelement etc.

主要成份：乳木果、微量元素、维他命。

Study on trace element of Anti-oxygen deficits Chinese Traditional Medicines by Using Principal Component Analysis

主成分分析用于中成药中微量元素含量分析

Investigation of Several Microelements in Plough Layer in the Major Soils in Henan Province

河南省主要土类耕层中几种微量元素全量分析

Stuty of the Principal Component Analysis Method to trace element in Chinese herbal medicine

主成分分析用于中草药微量元素含量的分析

DETERMINATION OF MAIN AND TRACE ELEMENTS IN COAL ASH BY ICP-AES

等离子发射光谱法测定焦煤灰分中的主要元素与微量元素

Determination of Primary and Minor Elements in Manganese Ore by X-Ray Fluorescence Spectrometry

X射线荧光光谱法测定锰矿中主元素和微量元素

Research on Subjective Evaluation of Soundscape Elements Quantification for Urban Park Soundscape;

城市公园声景观声景元素量化主观评价研究

The Contents and QTL Analysis of Main Mineral Contents in Wheat Grain;

小麦籽粒主要有益矿质元素的含量及其QTL定位

Principal Component Analysis to the Trace Elements of Rhizoma Polygonatum in Different Districts of China

不同产地黄精中微量元素的主成分分析

The Annual Dynamic Change of Main Non-organic Nutrition Elements Content in Juglans Regia Leaves

核桃叶中主要营养元素含量的年动态变化规律

Toxic substances contents in fertilizers and its environmental risk assessment in China

我国主要肥料产品中有害元素的含量与评价

Portable XRF Analyzer Used for Determining the Content of Main Element Fe

便携式XRF分析仪快速测定主元素Fe含量

Determination of Major,Minor and Trace Elements in the Soil Sample by X-Ray Fluorescence Spectrometry

X射线荧光光谱法测定土壤中主、次、微量元素