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a clean glass ring on a P.T.F.E. sheet.Çó·Òë
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The mixture was cast into a clean glass ring on a P.T.F¡£E. sheet and loosely covered to allow slow evaporation of the acetonitrile.Çó·ÒëÔÚÏߵȡ£¼±¼±¼±¼±¼±¼± ![]() ![]() ![]() ![]() ![]() |
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