time-weighted average 加权时间平均值 ; 时间加权平均浓度
time weighted average concentration 时间加权平均浓度
time weighted average concentration twa 时间加权平均浓度
time-weighted average overall efficiency 时间加权平均全效率
time weighted average allowable concentration 时间加权平均容许浓度
weighted average travel time 加权平均出行时间
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