The influence on propylene epoxide by lots of mechanical admixture and chemicaladmixture in carbide slag, and the instability factors in production control were introduced.
介绍了电石渣中的大量机械杂质和化学杂质对环氧丙烷生产的影响及由其所引起的生产控制方面的不稳定因素。
2
There are three important parts related with HPC admixture. They are leading functional group, hydrogen bond and special chemical structure.
主导官能团、氢键、特殊化学结构，是高性能外加剂三个重要问题。
3
This paper expounds mineral composition, physical and chemical characteristics, activity and its evaluation of natural volcanic ash which is used as concrete admixture.