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An effective way to make the computational cost of these analyses affordable is to model powder and molten metal as continuous media , wherein all the heat transfer modes occurring in the liquid are simulated as lumped fictitious heat conduction .
 model, molten metal, as, heat transfer, as, heat conduction
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 model, molten metal, as, heat transfer, as, heat conduction