Filter bed should be exposurd as less as possible because alternation of exposure and immersion is disbennifit to the penetrability of filter bed.
依据
质资料分析了源质安全保障。
池Filter bed should be exposurd as less as possible because alternation of exposure and immersion is disbennifit to the penetrability of filter bed.
依据质资料分析了源质安全保障。
This paper discussed water liquor acts on micrinite in the calcareous clay at the bottom of saline aquifer and put forward the concept of filter bed of salinity.
本文讨论了咸质
底
钙
微观粒与溶液的相互作用，提出了“滤盐层”的概念。
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