According to their characteristics, the contamination source, hazard and prevention method of the contaminations are analyzed in the article.

  • 本文按此分类对图书馆内主要污染物的来源、危害和防治进行分析。

  • 互联网摘选 2025-01-20 11:39:08

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句