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单词 crown bar
释义

Definition of crown bar in English:

crown bar

noun
  • Engineering a horizontal bar supporting the crown of an arch or tunnel, or the crown sheet in a steam engine.

Origin

Late 17th century; earliest use found in John Davies (1625–1693), translator.

Definition of crown bar in US English:

crown bar

noun
  • Engineering a horizontal bar supporting the crown of an arch or tunnel, or the crown sheet in a steam engine.

Origin

Late 17th century; earliest use found in John Davies (1625–1693), translator.

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更新时间:2025/1/14 5:16:23