| 英文名称: | | 2-oxepanone, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, alpha-hydr | | o- omega -hydroxypoly(oxy-1,2-ethanediyl) and 1,1'-methylenebis[4-isocyanatocyc | | lohexane] | | 2-oxepanone, polymer with2-ethyl-2-(hydroxymethyl)-1,3-propanediol, alpha-hydro- omega-hydroxypoly(oxy-1,2-ethanediyl) and |
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