他决定他必须通过从工厂收集废布料和使用如有机棉这种环保材料来减少碳排放量。
He decided he needed to reduce his carbon footprint through collecting waste fabrics from factories and use eco-friendly materials like organic cotton.
为了提高高碳铬铁的回收率，分析了影响渣中铬含量的因素，并通过配加废镁砖和菱镁矿作了初步试验。
To increase recovery of high carbon ferrochrome, the effecting factors of chrome contents in slags were analysed, and the preliminary test of adding waste magnesia brick and magnesite were conducted.
活性碳；活性天然矿产品；动物炭黑，包括废动物炭黑。
Activated carbon; activated natural mineral products; animal black, including spent animal black.
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