淡水砂 的英文怎麼說
中文拼音 [dànshuǐshā]
淡水砂
英文
fresh water sand-
Large scale salt - water intrusion has been occurred since late 1970 ' s due to freshwater exploitation by human activity
20世紀70年代末期以來,隨著對地下淡水的過度開采,淡鹹水水頭壓力差減小,鹵水通過古河道砂層快速南侵。The article analyzes the important problems existing in the well completion technologies for drinking - water suppling in salt - water area on the lower shiyanghe river basin, which reduces sand content of well water and avoids mixing the upper salt water and the lower fresh water
摘要文章分析了石羊河下游鹹水區人飲水成井中存在降低井水含砂量,避免上部鹹水與下部淡水相串兩個關鍵性技術問題。
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