A (often a Junkers flow calorimeter ) is a classic instrument for measuring the calorific value (heating value) of a combustible gas.
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A (often a Junkers flow calorimeter ) is a classic instrument for measuring the calorific value (heating value) of a combustible gas.
A (often a Junkers flow calorimeter ) is a classic instrument for measuring the calorific value (heating value) of a combustible gas.
popular brand
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