Because of the existence, quantity and change of chemical composition of pyroxene group minerals, such as jadeite aeginine, vryite and hedenbergite, largely influence the quality of jadeite.
其中辉石族的矿物如硬玉、霓石、钠铬辉石、钙铁辉石，他们的存在和数量的多少以及化学成分的变化对翡翠质量的影响很大。
Transportation is very convenient, I plant the production of gypsum Hongda licensing granulation Guangxi Yufeng Group has developed technology development, applied to replace the natural gypsum cement production of new products, the product of the system of experiments and research, come to the conclusion that: The modified gypsum disposal of chemical composition and stable performance, for Xuanyao, a slow setting shaft kiln cement materials fully meet the national standard GB5438-85 for cement production of gypsum and anhydrite requirements.
交通十分便利，我厂生产的弘达牌造粒石膏是广西鱼峰集团技术开发公司开发，应用于水泥生产取代天然石膏的新产品，该产品进行了系统的实验和研究，得出的结论是：该石膏改性处理化学成份及性能稳定，用于旋窑，立窑水泥作为缓凝材料完全达到国家标准GB5438-85用于水泥生产中的石膏和硬石膏要求。
The difference in the alkyl group of the organic lead salts accounts for the difference of their adsorption on the frictional pair surface and hence the strength of the boundary lubricating film as well. This leads to the difference in the chemical composition and physical properties of the boundary lubricating film and thus the tribological behavior as well.
通过对铅盐分子结构及相应钢球磨斑表面进行扫描电子显微镜和 X射线光电子能谱分析，发现铅盐对基础油摩擦学性能的改善归因于摩擦过程中有机铅盐在摩擦副表面形成一定强度的吸附膜以及部分吸附膜转化为铅氧化物膜的摩擦化学反应。
The Baoyintu group may be divided into five lithologic members based on the chemical composition and the formation sequence, and the age of the formation is 2485±128Ma by Sm-Nd isochron dating in plagioclase amphibolite in the oldest lithologic member.
在野外地质填图的基础上，将宝音图群按照内部的物质成分差异和地层形成年代先后顺序，将宝音图群划分为五个段，其中最早形成的第一岩性段中斜长角闪岩中Sm-Nd全岩等时线年龄为2485±128Ma，可代表宝音图群的形成年龄。
Structure and composition analysis of experiments: it is to determine the chemical composition of substances or compounds of the atoms or atomic group of the spatial structure of an experiment.
结构及成分分析实验：它是测定物质的化学组分或化合物的原子或原子团的空间结构的一种实验。
Structure and composition analysis of the experiment: it is the determination of the chemical composition or compound of atoms or atomic group of an experimental space structure.
结构及成分分析实验：它是测定物质的化学组分或化合物的原子或原子团的空间结构的一种实验。
The results showed that four HAs have similar chemical composition and structural properties, but the details were very different.(1) H/C, O/C, and C/N atomic ratios are different for four HAs, suggested that their differences in chemical composition and structure; (2) FT-IR spectra indicated that peat and paddy HAs contain more aliphatic group and less carboxylic/carbonyl groups than pond and river HAs; (3) distinct structural differences existing among 4 HAs were indicated by CP-MAS 13C NMR data.
结果显示，虽然不同来源的腐殖酸在化学组成和结构具有很多类似之处，但由于其生物来源和成岩环境的不同，4种腐殖酸在细节上明显不同：（1）不同来源腐殖酸之间H/C、O/C和C/N原子比具有明显的差别，暗示着其化学组成和结构上的差异；（2）FT-IR分析显示，泥炭和稻田腐殖酸中含有更多的脂肪碳链结构，而河流和鱼塘腐殖酸中含有较多的羧基和羰基官能团；（3）13C NMR数据也表明不同来源腐殖酸在结构上是有明显不同的。
A new idea is brought forward to study coal chemical group composition by the coal unfreezing technology.
综述了煤可溶化技术研究的现状，讨论了影响煤可溶化的主要因素以及几种强化方法，指出了今后应作深入研究的几个方面，并提出了利用煤的可溶化技术进行煤的化学族组成研究的设想。
The use of ore powder with indefinite chemical composition contributed to a series of BF abnormal conditions at Xiangtan Iron & Steel Group Co.
湘钢因使用成分不明的老矿粉，导致高炉生产不顺、铁水罐粘结、风口烧坏等问题。
Intracrystalline variations in chemical composition of garnet and biotite from the Ji'an group of Tonghua district and its significance as an indicator of metamorphic PTT path
通化集安群石榴子石和黑云母微区化学成分特征及其对变质作用p-T-t轨迹的指示意义
According to the structural group theory, the chemical composition of petroleum fractions can be classified as structural groups as aromatics, naphthene, olefin and non-hydrocarbon elements etc. Among them, aromatics and naphthene can be further divided into some sub-groups depending on their ring distribution.
按照结构基团理论，将石油馏分的化学组成划分为芳烃、环烷烃、烯烃和非烃元素等结构基因，其中芳烃和环烷烃还按照其环分布划分为若干个亚族基因。
The composition of the new compound was determined by chemical and elemental analyses and its formula fits Co (C 4H 7O 5) 2 · H 2O. IR spectra indicate that Co 2 + in the compound is coordinated to the oxygen atom of the carboxyl group.
用化学分析及元素分析确定其组成为Co（C4H7O5）·H2O，IR光谱分析结果表明新化合物中苏糖酸以羧基氧原子与Co2+配位。
High boiling solvent pulp process will manufacture high boiling solvent (HBS) lignin. Compared with the sulfonate lignin, HBS lignin is discriminated in the physico-chemical characteristic, element composition and group content.
高沸醇溶剂法制备得到的高沸醇（HBS）木质素与传统木质素相比，其理化性质有很大不同，元素及官能团也有很大差别。
A Study on Local Composition Model (ⅱ) A Group Contribution Quasi-Chemical Local Composition Model
局部组成模型的研究（Ⅱ）似化学局部组成的基团模型
The composition. crystal structure, coordination bonding model between metal ions and carboxylate group was characterized by means on chemical analysis, element analysis, power X-ray diffraction, emission and excitation spectrum, ultraviolet and thermal analysis.
通过元素分析、X射线粉末衍射、红外光谱和热重分析，确定了苯甲酸锌的组成、晶体结构及羧酸根与金属离子的配位方式，并测试了其发射光谱和激光光谱。
Flooding, as a kind of disturbance events, occurred with higher and higherfrequency over the world. To investigate the effects of flooding disturbance ongrassland vegetation and the soil, a comparatively thorough study was conducted onAneurolepidium chinense grassland in Songnen plain, Northeast China. The studysite was located in Sanjiadian National Rangeland in the territory of Da'an city, Jilirprovince, which was partly flooded in 1998.On the study site, Several transectssubjected to different flooding durations and intensities were designed for thecomparative study among them on such aspects as vegetation characteristics, seedbanks, vegetative propagation of rhizomatous plants, distribution patterns ofpopulations, interspecific relations, and physio-chemical properties of soil. Theresults were as follows:(1)Of the functional group composition of the vegetation, with the elongation of the flooding duration or the increase of flooding severity, theratio of hygric and hygro-mesic plants increase, while that of mesic and mesoxericplants decrease, of Therophytes changed unimodally, of Geophytes increased, whileof Hemicryptophytes decreased.
为弄清草地植被及其土壤环境对水淹干扰的响应，在松嫩平原羊草草地1998年部分遭受水淹的吉林省大安市三家甸子草场内设置了经历不同水淹干扰持续时间和不同水淹强度的样带，并在这些样带之间从植被特征、种子库特征、根茎植物的营养繁殖性能、种群分布格局、种间关系及土壤的理化性质等多个方面展开对比研究，主要结果如下：(1)在植被的功能群组成中，随干扰强度的增加和水淹干扰持续时间的延长，湿生、湿中生类植物功能群的优势度比例基本上是逐渐增加的，中生、中旱生类植物功能群的优势度比例则逐渐减小，而一年生植物的优势度比例呈单峰型变化，地下芽植物比例增加，地面芽植物比例减小。
GC-MS DS analyses shows that 35 Kinds of chemical compounds in the essential oil are in tune with control group of test and genuine Yangchun Fructus Amomi. The chemical composition vary in the relative content.
GcMsDs分析鉴定精油中35种化合物，与试验对照及地道阳春砂仁化学成分一致，相对含量各有高低。
The activity of enzyme in high-load swimming training group which were influenced by the changes of RBCM composition and its physical characteristic declined by the end of training, it showed that on RBCM, changes of physical and chemical nature were interactional.
大负荷游戏训练组酶活性受其膜组成及物理特性改变的影响而下降，反过来又影响膜特性及功能，揭示大负荷训练造成的膜理化性质的改变是相互关联的。
Study of coal chemical group composition part (ⅱ) optimization of the coal unfreezing system
煤的化学族组成研究（Ⅱ）煤的可溶化体系的优化
Coal Unfreezing Extraction and Coal Chemical Group Composition A Discussion on Residual Oil Chemical Family Composition Determination
煤的可溶化技术与煤的化学族组成渣油化学族组成方法的探讨