A polyurethane is a polymer comprised of a chain of organic units joined urethane links.

  • 聚氨酯是一种高分子链组成的聚合体.

  • 互联网摘选 2025-01-19 10:51:37

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