英语词汇“防火时效”的翻译、意思、用法、释义-英汉汉英词典

单词	防火时效
释义	防火时效fire resistance period
随便看	now generation nowgong nowhence nowhere nowhere dense nowhere-dense nowheredense nowhere dense set nowhere differentiable function nowhere near nowheres nowheresvile nowheresville now here then there now here, then there now high now low nowhither nowicki now, immediately no-win no-wind heading no wind position nowingi now in hand no-win, no-fee