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direct-fired heater
tech.	直焰炉; 直接火力加热器; 明火炉; 直热式空气加热器
textile	直接火焰加热器
direct fired heater
chem.	直接火力加热器; 直焰炉
oil	直接火焰加热器炉

direct-fired heater: 4 phrases in 2 subjects

Refrigeration	1
Technology	3