如图所示不旋转的铝件在强大压力作用下顶住高速旋转的铜件并使两者接触处温度急剧升高这样铜和铝接触处的分子相互渗透由于分子间存在引力的作用 Template




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tomski如图所示不旋转的铝件在强大压力作用下顶住高速旋转的铜件并使两者接触处温度急剧升高这样铜和铝接触处的分子相互渗透由于分子间存在引力的作用 coloring