নিৰ্বাত পাতননিৰ্বাপক
নিৰ্বাত বাষ্পীভৱন (Assamese)
1. ChemistryVacuum evaporation is the process of causing the pressure in a liquid-filled container to be reduced below the vapor pressure of the liquid, causing the liquid to evaporate at a lower temperature than... from wikipedia.org