chemical constitution
化学成分：指物质的化学组成
常用释义
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基本释义
- 化学成分：指物质的化学组成，包括元素、化合物、离子等。
例句
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1·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。
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2·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。
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3·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。
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4·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。
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5·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。
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6·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。
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7·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。
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8·We know the constitution of mineral through chemical analysis.我们通过化学分析知道矿物的构成。
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9·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。
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10·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。