英语词汇“primer setback”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	primer setback
释义	primer setback primer setback [′prīm·ər ′set‚bak] (ordnance) The backward movement of a primer cup in a cartridge case which occurs when the base of the cup is not properly supported by the bolt face or breechblock.
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