heating tube heating unit heating-up period heating-up time heating value heat input heat-insulated heat-insulating heat-insulating material heat insulation heat-insulation layer heat interchange heat interchanger heat leakage heat-liberating process heat loss heat-loss recovery heat of condensation heat of crystallisation heat of evaporation |
heating tube подгряваща тръба нагревателна тръба, тръбен нагревателен елемент Търсената дума е намерена |