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pbu

  • 网络尿铅;聚砜;参与者交易业务单元;专业市场事业部;资深销售工程师
pbupbu
  1. When the temperature was lower than the T g of soft segments in PU , both the size and the relative concentration of free volume increased with increasing temperature for PBU and PCU .

    当温度低于PU软段的Tg时,两类PU的自由体积尺寸和浓度都随温度升高而增大。