The main features of the fissure type nitrogen blow hole and its formation mechanism was described.

  • 叙述灰铸铁件裂隙状氮气孔的主要特征、形成机理.

  • 互联网摘选 2025-01-18 10:46:34

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