Therefore, the study was made on the use of subsurface crushed stone wetland for phosphorus removal from the effluent of secondary bio-chemical treatment process.
为此，开展了潜流碎石床湿地去除二级生化处理出水中磷的研究。
Used for bio-polishing for cellulose fiber suitable for both woven fabrics and knitted fabrics; also used for bringing old-fashion and stone-grinding effect to the Denim Fabrics;
用于纤维素织物的生化光洁，对机织物和针织物都适用，还可用于牛仔布的陈旧及石磨效果。
Used for bio-polishing for cellulose fiber suitable for both woven fabrics and knitted fabrics; also used for bringing old-fashion and stone-grinding effect to the Denim Fabrics;
用于纤维素织物的生化光洁，对机织物和针织物都适用，还可用于牛仔布的陈旧及石磨效果。
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