Three types of columns are employed: (I) the elongation is simply a straight or bulb tube; (2) the column, properly termed a dephlegmator, is so constructed that the vapours have to traverse a column of previously condensed vapour; (3) the column is encircled by a jacket through which a liquid cir
cir הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד