Advantage and defect of semi-metallic , none-asbestos polymer and powder metallurgy were discussed.

  • 探讨半金属基摩擦材料 、 非 石棉有机摩擦材料和粉末冶金摩擦材料的优缺点.

  • 互联网摘选 2025-01-20 18:48:36

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