2) chemical mobility
化学活动性
1.
Sequential extraction experiments were used to study the chemical mobility of fluorine in rocks.
使用逐级化学提取方法对岩石中氟元素的化学活动性进行了研究。
2.
By studying the relation of selenium between the rock and stone coal with their weathering rock and original soil of early Paleozoic Period in Daba Mountain and combining the dripping and leaching experiment, the chemical mobility of selenium in the rock and stone coal of early Paleozoic in Daba Mountain was investigated.
通过对大巴山区主要分布的早古生代地层中的碎屑岩、碳酸盐岩和石煤的原岩、风化岩、原生土壤的硒含量及其相关关系分析 ,及对南秦岭早古生代地层和石煤中硒的化学活动性进行了研究 。
3.
In order to study the geochemical behavior about toxic trace elements of Yunfu pyrite in utilization process and evaluate their effects scientifically on environmental quality, the sequential extraction procedure is used to analyze the speciation distribution and chemical mobility of eleven toxic elements (Co, Ni, Cu, Zn, As, Se, Cd, Sn, Sb, Pb and Tl) in Yunfu pyrite and its industrial slag.
为了解云浮黄铁矿利用过程中微量毒害元素的环境地球化学行为,客观评价它们对环境质量的影响,利用元素结合形态的连续提取实验方法,分析了云浮黄铁矿及其工业废渣中Co、Ni、Cu、Zn、As、Se、Cd、Sn、Sb、Pb和Tl等11种毒害元素的形态及化学活动性。
4) Activity-Oriented Teaching
活动化教学
1.
Activity-Oriented Teaching Scheme of English Teaching in Primary Schools;
小学英语课堂活动化教学初探
5) Chemistry activity course
化学活动课
1.
Chemistry activity course is the extent and supplement of the classroom teaching.
化学活动课是化学课堂教学的延伸和补充，可以培养学生的观察能力、操作能力、思维能力等，有利于提高学生的化学科学素质，有利于学生身心全面和谐的发展，有利于素质教育的进一步深入。
6) chemistry learning activities
化学学习活动
1.
Through the analysis of the process and structure of chemistry leaning activities, this article discusses the optimization techniques in chemistry learning activities in terms of teaching and learning respectively.
本文通过对化学学习活动的历程、结构分析，分别从教和学两个角度对化学学习活动的优化策略进行了探讨。
补充资料：工程化学障碍物(见化学障碍物)
工程化学障碍物(见化学障碍物)
engineering-chemical obstacle
习U·上日、11匕I一9 nuQXue Zhang’aiwu工程化学障碍物(engineelsng一ehemiealobstacle)见化学障碍物。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条