A yankin Nanchuan, Chongqing, Sinomeasure, na'urorin nazarin ingancin ruwa na Longyan: Mitar pH, narkar da iskar oxygen, mita turbidity, sludge maida meter, da sauran kayan aikin an yi nasarar amfani da su a cikin aikin kula da najasa, wanda ya yi tasiri sosai ...
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