基本解释[物理学]平均每代时间英汉例句双语例句At the same time, sluggish sales mean much slower liquidity generation on their own.于此同时，缓慢的销售速度意味着他们自己能够回笼资金的速度放慢。mean generation time更多例句词组短语短语generation the mean generation time 平均世代周期mean generation time更多词组专业释义物理学平均每代时间