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By comparison with the results from an experimental and numerical analysis , the same depositing directions have a large temperature gradient and produce greater plastic distortion during solidification .
 concept or principle: experimental; process parameter: temperature gradient; material: plastic; concept or principle: distortion; concept or principle: solidification
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 concept or principle: experimental; process parameter: temperature gradient; material: plastic; concept or principle: distortion; concept or principle: solidification