英语词汇“direct-reading permmeter”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	direct-reading permmeter
释义	direct-reading permmeter 直读式透气性测定仪[ 利用气钟内的稳压气源，通过试样座的标准孔来测定型砂试样透气性的仪器。(IGI)]
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