The text analyses the situation of chlordane distributed over soil by mathematics,and explains the principle of chlordane moving in soil by the knowedg of architectura engineering.
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美
- 本文通过运用数学方法分析了氯丹在土壤中分析情况,并运用建筑学的有关知识解释了氯丹在土壤中移动的道理。