英语词汇useful life是什么意思，useful life的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	useful life
释义	useful life　【化】有效期; 使用寿命【经】可用年限, 有用寿命
随便看	decreasing return decreasing returns decreasing sequence of sets decreasing series decreasing term insurance decreasing utility decreasing vibration decreasing wages share decreasingly decreasingly decree decree decree decree decree a mensa et thoro decree a punishment decree absolute decree absolute decree absolute decree an amnesty decree for pardon decree in effect decree law decree nisi decree nisi

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