| 英文名称: | | 2,2'-[1,4-phenylenebis(oxy)]bis-ethano polymer with alpha-hydro- omega -hyd | | roxypoly(oxy-1,4-butanediyl) and 1,1'-methylenebis[4-isocyanatobenzene] | | ethanol, 2,2'-[1,4-phenylenebis(oxy)]bis-, polymerwith alpha-hydro- omega -hydroxypoly(oxy-1,4-butanediyl) and |
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