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单词 filled gold
释义

WordReference Random House Unabridged Dictionary of American English © 2024
filled gold, 
  1. Metallurgy, Jewelrya composition consisting of gold-plating welded to and rolled with a backing of brass or other base metal, at least 120 of the total weight being that of the gold. Also called rolled gold. Cf. gold-filled.

Collins Concise English Dictionary © HarperCollins Publishers::
filled gold n
  1. another name (esp US) for rolled gold
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