If the flue pipe be carried up a considerable distance inside the apartment to be warmed before being turned into the external air, practically the whole of the heat generated will be utilized.
Flue-dust contains principally ferric oxide, zinc oxide, arsenious and sulphuric acids, and small quantities of the various metals occurring in the raw ore.
flue הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד