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Meanwhile , to calculate the variations in the temperature , stress , and distortion under different depositing paths , a model of wire arc additive manufacturing was established by using a numerical model .
 concept or principle: variations; process parameter: temperature; machanical property: stress; concept or principle: distortion; concept or principle: model; manufacturing process: wire arc additive manufacturing; concept or principle: model
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: variations; process parameter: temperature; machanical property: stress; concept or principle: distortion; concept or principle: model; manufacturing process: wire arc additive manufacturing; concept or principle: model