total pressure differences 基本例句 总压差 At the same altitude, thetotal pressure differencesof the bottom overhead multistory construction are always larger than those of the non-bottom overhead multistory construction.在同一位呈上，底层架空的多层建筑的迎背风总压差基本上都大于非架空的多层建筑的迎背风面总压差。