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铜氨丝 tóngānsī
chem. bemsilk
textile cellulo-silk; Cuprammonium rayon; Cuprammonium rayon fiber; Cuprammonium silk; Cuprammonium yarn; cupro fiber
铜氨人造
textile Cuprammonium rayon
铜 氨 丝
: 13 phrases in 2 subjects
Polymers1
Textile industry12