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2S,3S; 2R,3R; 2S,3R; 2R,3S。
2R,3R,4R; 2R,3R,4S; 2S,3S,4S; 2S,3S,4R。
Reuse Reduce Recycle Recreate
2R,3S,4S,5R 2R,3S,4R,5R 2R,3R,4S,5R 2S,3R,4S,5S 2S,3R,4R,5S
减量化再利用再循环 不污染再回收再循环 高效化新能源绿色度 清洁化高效化绿色化
(2R,3S)-(-) (2R,3S)-(+) (2S,3R)-(-) (2S,3R)-(+)
recycle reuse relate reduce
replacementeductionefinement replacementecoveryefinement replacementeductioneference replacementecoveryeactivity replacementecoveryeference