大学英语词汇短语释义解析及例句 elemental composition
释义：
elemental composition 构成的化学元素; 元素组成;
元素成分;
化学组成
例句：
Trace elements in soil of Tumotezuoqi were similar to the background levels of elemental composition of soil in the world.
土壤中微量元素的含量与世界土壤背景值相似。
The elemental composition and valence state of the elements and their changes with the variation of depth were investigated by mains of XPS.
用XPS研究了渗硼层磨损表面的成分、元素价态及其随深度的变化。
Elemental composition analysis, proximate fuel analysis and fuel composition analysis of sawdust briquette fuel were done in the experiment.
试验分别对木屑致密成型燃料进行了元素分析、工业分析和燃料组成分析。
The elemental composition and the temperature of thermal explosion are principal factors to influence the reactions and morphology of the products.
体系成分和热爆温度是影响反应及产物形态的主要因素。
Firstly, they were identified by authors as ultra microfossils instead of ultra microbes based on their morphology, structure and elemental composition.
首先，它们是笔者根据形态、结构和元素成分作为超微生物化石进行鉴定的。
The PET fibers are treated by cold plasma technology and the elemental composition and the type of functional groups of the surface of PET was analyzed by ESCA.
采用冷等离子体技术处理涤纶纤维，利用ESCA分析了冷等离子体处理前后的纤维表面元素组成、官能团类型的变化。
It has been found that the new elemental composition in extrusion moulding is epoxy and paraffin. and the precision zirconia ceramic ferrules have been obtained.
获得了环氧树脂和石蜡两种新的二氧化锆成型配方。
Elemental composition can vary within the same copper-ore lode, usually because of varying admixtures of other elements, especially iron, lead, zinc, and arsenic.
即使在同一铜矿矿脉中，元素构成也会发生差异，这一般是因为其它元素，尤其是铁、铅、锡、和砷等程度不同的混合。
The relative atomic percent contents (A. C. %) of the golden film calculated at the constant elemental composition section on the AES profile curves were O 56.9%;
从AES深度分布曲线的组成恒定区求得各组成元素的相对原子百分浓度（A.C。%）为：O 56.9%；
Objective: To evaluate the influence of air oxidation, anodizing and tin coating sample on elemental composition and thickness of surface film of cast pure titanium.
目的：评价大气热氧化、阳极氧化和氮化钛镀膜对铸造纯钛表面膜组成和厚度的影响。
Combined with the results of INAA and glaze study, this change in elemental composition should be caused by the change in porcelain raw materials or body-making crafts.
结合中子活化分析及瓷釉研究的结果来看，这种改变应是因其制瓷原料或胎料配方发生变化引起的。
The elemental composition and concentrations of trace elements in seawater, suspended matters, and Marine rain are presented for samples collected at the Western Pacific Regions.
本工作测定了西太平洋海域中海水、海水悬浮物和海面上雨水的元素组成和浓度。
Elemental composition and BET surface area of pyrolysis carbon were investigated. X-ray diffraction pattern and constant-current charge-discharge properties of pyrolysis carbon were studied.
元素分析、氮气物理吸附和X射线衍射分别考察了裂解炭的元素组成、BET比表面积以及微晶结构变化；
The mass concentration, water-soluble ions and elemental composition of fine particles were detected by the weighing method, ion chromatography, inductively coupled plasma chromatography separately.
用称重法、离子色谱法和电感耦合等离子质谱法分别测得细颗粒物的质量浓度、水溶性离子和元素组成。
