Higher core recoveryassisted in coring operations when this kind of bit is used for hole enlargement.

  • 加深井钻进,用双心钻头可增大环空间隙,提高固井质量.

  • 互联网摘选 2025-01-18 11:40:38

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