Introduces how to synthesize acrylic acid, acrylate and phenylethene quadripolymer into alcohol-soluble acrylic resin and use it as a link stuff to prepare flexible reliefblock printing ink.
Pervasive ice cover for eight to nine months out of the year can blockrelief ships in case of a blowout.
如果发生井喷,一年中八到九个月无处不在的冰盖会阻挡救援船队。
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Meanwhile, well operators considered drilling a relief well: a diagonal well intersecting the original that could be filled with mud or concrete to block the flowing oil