• 1. Churn drill: 冲击钻 | 钢丝绳钻机 | 旋冲钻 | 顿钻
• 2. hand churn drill: 手动钢丝绳钻机 | 手动钢绳冲击式钻机
• 3. churn-drill bit: 冲击钻头

更多释义

• 1.One great-torque motor with proper power is made to match with the rotary churn unit in pneumatic drill to form the electric pneumatic drill as one kind of powerful electrically driven tool.
  将适当功率的大扭矩特种电动机与气动风炮上的旋转式冲击装置相匹配而产生出的一种有着强冲击扭力的电动工具――电动风炮。
  dict.yoduao.com

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