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intercambiador de calor
earth.sc.	attemperator
energ.ind., mech.eng.	heat pipe
mech.eng.	heat exchange unit
phys.sc., mech.eng.	heat interchanger; heat exchanger
transp.	intercooler
transp., mech.eng.	charge air cooler

intercambiador de calor: 8 phrases in 4 subjects

Chemistry	1
Earth sciences	1
Energy industry	1
Mechanic engineering	5