... calcium index 血钙指数... calcium infiltration 钙质浸润... calcium iodate 碘酸钙碘酸钙...
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With the help of laboratory and thermodynamic simulation, the relation of nitrogen transformation with calcium and magnesium variation during wastewater infiltration in soil water system is studied.
结果表明：在连续入渗条件下，阳离子交换作用是控制地下水硬度升高的主要过程；
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