| 英文名称: | | 2-ethanediyl)], alpha-hydro- omega -hydroxy-poly[oxy(methyl- polymer with hy | | droxy-terminated polybutadiene and 1,1'-methylenebis[4-isocyanatobenzene] | | 2-ethanediyl)], alpha-hydro- omega-hydroxy-poly[oxy(methyl- polymer with hydroxy-terminated polybutadiene and |
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