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。

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。

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。

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。

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 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。

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。

We know the constitution of mineral through chemical analysis.

我们通过化学分析知道矿物的构成。

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。

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。