塔底残油

【化】 tower bottoms

塔的英语翻译：

pagoda; tower
【化】 column
【医】 tower

底的英语翻译：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【医】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

残油的英语翻译：

resid
【化】 bottom oil; goudron; reduced oil; residual products