• 1. unit head machine: 组合头钻床
• 2. unit head boring machine: 动力头式镗床
• 3. unit head turning machine: 动力头式车床

更多释义

• 1.The under electrical machine and leading cable head used in oilfields were of poor quality, which has greatly influenced the operation of the unit.
  油田使用的潜油电机引接电缆头密封质量差，严重影响机组正常运行。
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