化学结构；化学组成
The microstructure of a hard metal affects its properties to a considerable de- gree, besides the chemical constitution of the hard metal.
硬质合金材质的好坏，除受成分支配外，在很大程度上还受其显微组织的影响。
Squeeze casting can not only improve the gravity segregation and distribution of the chemical constitution of the cast but also the microsegregation of bar-shaped ZA27 alloy.
挤压铸造使棒状ZA27合金铸件的比重偏析有所改善，铸件成分分布更加均匀。 挤压铸造可以明显改善棒状ZA27合金铸件的显微偏析。
Through integrated study of crystallinity of authigenic illite and chemical constitution of authigenic chlorite, it is concluded that the Cenozoic paleogeothermal gra***nt is from 37.
综合应用自生伊利石结晶度和自生绿泥石化学成分，得出济阳坳陷新生代古地温梯度为37。
The practice proves that chemical constitution of molten steel has stabilization and the deviation is very small.
实践证明：采用此方法配料与调整，钢液成分稳定， 偏差小。
The results show that the gastrodia elata from six different areas have similar chemical constitution, but the content of the available composition is not the same.
结果表明：六个不同产地天麻药材在化合物组成方面有明显的相似性，但在具体有效成分及含量上仍有差别。
High yield strength IF steel with Nb and Ti microalloying is developed through chemical constitution design, refining, hot and cold rolling technological operation.
通过化学成分设计和冶炼、热轧及冷轧工艺的控制，研制出铌钛微合金化高屈服强度IF钢。
Study has been carried out on the chemical constitution and physical properties of the building sand made from the heavy slag from the blast furnace and its application to concrete.
研究了用冶炼高炉重矿渣制造的建筑用砂的化学成分、物理性能以及在混凝土中的应用情况。
The effect of the chemical constitution and the parameter of the control rolling and cooling technique to the mechanical property is analyzed after which the idea is determined.
在确定了工艺思想后，分析化学成分、控制轧制和控制冷却工艺参数对钢筋性能的影响。
The chemical constitution and mineral composition were analysed with a hard kaolin(kaolinite) of the Carboniferous-Permian coal measures strata, in Baishan region of Jilin province as the sample.
以吉林白山地区石炭、二叠煤系高岭土（或高岭石）为试样，进行了矿物成分、含量分析和研磨、 煅烧、添加不同漂白剂加工工艺实验。
The changes in chemical structure of residual lignin in reed kraft pulp were investigated by chemical analysis, element constitution and NMR spectroscopies.
从元素组成、功能基含量、结构单元三种基的比例和分子量及其分布等方面研究了苇浆残余木素的性质，并与芦苇木素进行了比较。
Immune system is a important assurance for health, and perform normal function of physiology, biochemistry. Immune system is also a target constitution assaulted by chemical poison.
免疫系统是维护机体健康、正常执行生理生化功能的重要保证，也是化学毒物经常攻击的靶组织。
After analyzing the chemical composition and physical phase constitution, the form course and mechanism of different kinds of scaling were subsequently analyzed;
根据对其化学成份及物相组成的分析，研究了各种结疤的形成过程、形成机理；
We know the constitution of mineral through chemical analysis.
经过化学分析，我们知道了矿石的构成。
Introduce constitution and realization of automatic control of automatic chemical-adding unit of SY system, and develop result evaluation of the application.
结合工程实例，阐述了SY系统自动控制加药装置的组成和自动控制的实现，并对该装置的使用状况作出了效果评价。
Based on the probability specimen, the classification of chemical compositions in weak interlayers not only basically reflects their mineral constitution, but also structures.
在随机取样的基础上，进行化学成份分类不仅基本反映了软弱夹层的矿物成份，而且反映了其宏观构造和微观结构特征；
AIM:To investigate the present state of physical constitution of students in Liaoning University of Petroleum and Chemical Technology, and to evaluate their health level scientifically.
目的：了解辽宁石油化工大学学生的体质现状，对其健康水平做出科学评价。
The chromosomal constitution and stability in parthenogenic maize plants induced by chemical treatment were stu***d.
对化学药剂诱导玉米孤雌生殖获得的植株的染色体组成及其稳定性进行了研究。
According to career feature and teaching laws of professional education, we introduce the necessity, constitution and practice of bilingual teaching system of fine chemical engineering in this paper.
结合行业特点，按照高职教学规律，说明了高职学生进行双语教学的必要性，并进行了高职精细化工专业双语教学体系的构建和实践。
The constitution of D3C temperature control system and operation principle were introduced, as well as the application on FDY production line in chemical fiber factory.
文章介绍了D3C温度控制系统的组成部分及其原理，以及系统在化纤厂FDY生产线上的具体应用。
DNA molecular constitution is damaged to result in the inductive variation of base structure in female breast tissue under the influence of physical factors and chemical factors.
在物理因素和化学因素的影响下，乳腺组织中DNA分子结构发生改变而出现损伤，导致碱基结构的诱发变异。
The foundry technology for resistant pressure base seat of submarine motor were discussed from some respects of chemical constitution, analysis of casting structure, modeling materials etc.
从化学成分、铸件结构、造型材料等几个方面探讨了潜水电机耐高压机座的铸造工艺。
Objective: To review the research advances in the chemical constitution and pharmacological activities of the Gelsemium elegans.
目的：综述马钱科胡蔓藤属钩吻植物化学成分及药理作用的研究进展。
Chemical constitution of Pinus kesiya oleoresin from Burma was analyzed by GC-MS.
采用GC-MS联用技术对产自缅甸的卡西亚松松脂化学成分进行了分析和鉴定。
|chemical structure/chemical composition;化学结构；[化学]化学组成
"Chemical Constitution"（化学组成）指的是一个化学物质中原子或离子的种类、数量以及它们之间相互连接的方式（即原子间的键合关系）。它描述的是物质最基本的、静态的构成框架，而不涉及原子在空间中的具体三维排列（这属于"化学结构"或"构型/构象"的范畴）。
其核心含义包括：
重要性： 化学组成是理解物质化学性质的基础。它决定了：
与"化学结构"的区别：
简单来说，化学组成定义了物质中原子"谁是谁"、"有多少"以及"谁和谁直接相连"。它是物质化学身份的最基本标识。
参考来源：
“Chemical constitution”是一个化学领域的专业术语，其核心含义是物质的化学成分组成方式，具体可从以下方面理解：
如需更深入探讨化学组成与结构的关系，可参考化学教材或专业文献。
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