英语词汇“mint proofing piece”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	mint proofing piece
释义	Mint Proofing Piece Mint Proofing Piece A high-quality gold ingot. Mint proofing pieces are melted in mints with less high-quality gold to make an alloy of 90% pure gold. This gold is then minted into coins. It is also called simply a proofing piece.
随便看	couple them with couple to couple-to-couple league couple together couplet poem couplets couple up couple us with couple with couple-year of protection couple you with coupling coupling agent coupling aperture coupling between object classes coupling box coupling capacitor coupling capacitor potential device coupling capacitor voltage transformer coupling coefficient coupling constant coupling constants coupling current-mode injection-locked frequency divider coupling data unit coupling decoupling network

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Mint Proofing Piece