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单词 mill file
释义

Definition of mill file in English:

mill file

noun
  • A type of file used (originally in machine shops) for sharpening saws and blades, and for finishing metals.

Origin

Mid 19th century; earliest use found in Scientific American.

Definition of mill file in US English:

mill file

noun
  • A type of file used (originally in machine shops) for sharpening saws and blades, and for finishing metals.

Origin

Mid 19th century; earliest use found in Scientific American.

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更新时间:2025/8/5 1:24:36