1912
In , intensive discussions and experimental computations were conducted for the support volume constrained 3D TO for AM design .
 concept or principle: experimental; application: support; concept or principle: 3D; manufacturing process: AM
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; application: support; concept or principle: 3D; manufacturing process: AM