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tolylene diisocyanate
earth.sc. 二异氰酸甲苯脂
oil 二异氰酸甲苯酯
polym. 甲苯二异氟酸酯
water.res., ecol. 甲苯二异氰酸酯
tolylene diisocyanate: 4 phrases in 2 subjects
Chemistry2
Polymers2