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nylon 66
chem. 尼龙-66
plast. 聚己二酰己二胺; 尼龙66
polym. 尼龙 66; 聚己二酰己二胺纤维
nylon-66
oil 尼龙 66
nylon-66
: 3 phrases in 2 subjects
Oil / petroleum2
Textile industry1