twotier system;doubletrack system

同义词释义

1)two-tier system;double-track system,双重轨制2)two-tier system / double-track system,双重轨制3)double-track system,双重轨制4)double,双重5)dual,双重6)dual nature,双重性（双重类别）7)Dual Fluorescence,双重荧光8)dual curing,双重固化9)double emulsions,双重乳液10)double modification,双重改性