低热值

【化】 low heating value; lower calorific power; lower calorific value
lower heating value; net heating value; net thermal value

低的英语翻译：

hang down; low; lowness
【医】 hyp-; hypo-

热值的英语翻译：

【化】 caloric value; caloricity; calorific capacity; calorific power
calorific value; combustion value; heat value; heat(ing) value
heating capacity