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单词 pump-bob
释义

Definition of pump-bob in English:

pump-bob

noun
rare
  • A mechanism for converting rotary motion into linear motion suitable for operating a pump.

Origin

Late 19th century.

Definition of pump-bob in US English:

pump-bob

noun
rare
  • A mechanism for converting rotary motion into linear motion suitable for operating a pump.

Origin

Late 19th century.

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更新时间:2025/7/6 3:01:29