英语词汇“proof-mark”的意思、释义、用法解释及翻译-春雷网

词汇	proof-mark
释义	Definition of proof-mark in English: proof-mark noun A mark stamped on a firearm to show that it has been satisfactorily tested. Origin Mid 18th century. Definition of proof-mark in US English: proof-mark noun A mark stamped on a firearm to show that it has been satisfactorily tested. Origin Mid 18th century.
随便看	ring up the curtain ring up the curtain on ring vaccination ring velvet ring vortex ring-walk ring wall ring watch ringway ringways ring winding ringwise ring with ring with ring with ring with/to ring with/to ringwood ringwork ringworks ringworm ring-worm ringworm bush ringworm root ringworms

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Definition of proof-mark in English: