forced draught water cooling tower英 [fɔːst drɑːft ˈwɔːtə(r) ˈkuːlɪŋ ˈtaʊə(r)]美 [fɔːrst dræft ˈwɔːtər ˈkuːlɪŋ ˈtaʊər]【化】强制通风凉水塔化学