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transient and spatial variations of thermal gradient and liquid-solid interface velocity ) predicted by the model to phenomenological CET theory , the model accurately predicted the experimental grain structures .
 transient, spatial variations, thermal gradient, liquid-solid interface, predicted, model, phenomenological, CET theory, model accurately, experimental
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:
 transient, spatial variations, thermal gradient, liquid-solid interface, predicted, model, phenomenological, CET theory, model accurately, experimental