copper plates是什么意思 copper plates怎么读
copper plates的英文翻译是什么意思，词典释义与在线翻译
名词 copperplate:- a graceful style of handwriting based on the writing used on copperplate engravings
- a print made from an engraved copperplate
- an engraving consisting of a smooth plate of copper that has been etched or engraved
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