down-the-hole drill bit

[down-the-hole drill bit]
[down-the-hole drill bit]

中文释义

[矿业] 潜孔钻头

单词分析

单词结构:

down-the-hole drill bit

字母数:23

记忆提示

🎯 重点记忆:

  • 单词拼写:down-the-hole drill bit
  • 核心含义:[矿业] 潜孔钻头