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The profile of the deposited bead is mainly determined by static pressure caused by gravity and surface tension pressure , therefore the bead profile is nearly circular .
 engineering feature: profile; process characterization: deposited bead; concept or principle: pressure; machanical property: surface tension; concept or principle: pressure; process characterization: bead
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:
 engineering feature: profile; process characterization: deposited bead; concept or principle: pressure; machanical property: surface tension; concept or principle: pressure; process characterization: bead