Here, various conventional wethandling systems for non-wood fibers have been analyzed and compared, and the wet-preparation methods for some species of non-wood fiber plants...
The technological process of recovering copper and bismuth in wethandling elution residue by adding pyrolusite as oxidizing agents under the condition of ordinary pressure, low temperature, acidity.
主要介绍在常压、低温、酸性条件下加软锰矿为氧化剂湿法处理洗净残渣提取铜和铋的技术。
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These children are especially vulnerable to "green tobacco sickness", which is caused by the nicotine that is absorbed through the skin from the handling of wet tobacco leaves.