| 英文名称: | | 2h-azepin-2-one, hexahydro-, polymer with 1,3-diisocyanatomethylbenzene and alp | | ha-hydro- omega -hydroxypoly(oxy-1,4-butanediyl) | | 2h-azepin-2-one, hexahydro-, polymer with1,3-diisocyanatomethylbenzene and alpha-hydro- omega-hydroxypoly(oxy-1,4-butanediyl) |
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