研究了用化学方法处理后的骨料表面与界面过渡区结构特征。
The surface feature of aggregate, which have been pretreated by chemical method, and the structure of interfacial zone between aggregate and cement paste are studied.
引用水可以从废弃物提纯出来和用化学方法处理，因此它能够再利用。
The used water can be separated from waste matter and treated with chemicals so that it can be reused.
操作和管理窑，处理槽和其他设备，来干燥木材和其他木制品，使用防腐剂，用化学方法处理和浸渍木制品。
Operate and tend kilns, treating tanks and other equipment to dry lumber and other wood products, and to treat chemically and impregnate wood products with preservatives.
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