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参考文献:10.1007/s11814-020-0679-y 摘要:Mahmoudi M, Behin J. Detrimental effect of industrial toluene organic impurities on the density of rigid polyurethane foam and their removal. Korean Journal of Chemical Engineering. 2021 Jan 06;38(1):204–14. doi: 10.1007/s11814-020-0679-y.