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fastnesses的音標(biāo)：...

Disperse dyes are suitable for dyeing PU fiber, high uptake and satis factory fastnesses were observed.分散染料是氨綸染色的理想染料, 它具有較高的上染率和較好的染色牢度....

n.牢固( fastness的名詞復(fù)數(shù) )，固定，要塞，堡壘...