英语词汇“proofmark”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	proofmark
释义	proofmark \ˈ ̷ ̷ˌ ̷ ̷\ noun : a distinctive symbol stamped into the metal of the barrel or other part of a firearm to indicate that testing of the part bearing the stamp by firing proof loads has been carried out
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