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单词 pit frame
释义

Definition of pit frame in English:

pit frame

noun
  • The framework at the top of a mine shaft supporting the pulley.

Origin

Mid 18th century.

Definition of pit frame in US English:

pit frame

noun
  • The framework at the top of a mine shaft supporting the pulley.

Origin

Mid 18th century.

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更新时间:2024/10/19 17:28:08