The strength of water glass-PVA system silica gel is better and its cost is the lowest.

  • 水玻璃-PVA体系的硅胶柱硬度较好且成本最低.

  • 互联网摘选 2025-01-20 17:54:10

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