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单词 air-hardening
释义

WordReference Random House Unabridged Dictionary of American English © 2024
air-hard•en•ing  (ârhär′dn ing),USA pronunciation adj. [Metall.]
  1. Metallurgynoting any metal, esp. alloy steel, that can be hardened from above its transformation point by cooling in air.
  • 1905–10

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