Seasonal frozen soil is a special soil water system where ice and water coexist.

季节性冻土是一种冰水共存的特殊土水体系。

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Adsorption and desorption of fluorine at the surface of goethite is an important mechanism for fluorine migration and enrichment in the soil water system of the karst areas.

土层中针铁矿表面对氟的专性吸附及其解吸作用是岩溶地区土水系统中氟迁移和富集的重要机理。

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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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The HighDro Power system works by harnessing the considerable energy from falling waste water in the soil pipes of high-rises, converting it to electricity.

FORBES: Going Vertical

Many farmers using these seeds have even been able to implement a "no-till" system, which offers tremendous environmental benefits by preventing soil erosion, keeping farm water and chemical run-off out of local watersheds and releasing less carbon dioxide into the atmosphere.

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