1932
Finally , there are researchers working on level set TO methods to include AM material deposition path/toolpath as constraints to control sharp angles , deposition gaps , minimum inner hole size and minimum strut size in the topology formation process .
 application: set; material: AM material; material: as; engineering feature: sharp angles; process characterization: deposition gaps; engineering feature: hole size; process parameter: strut size; concept or principle: topology; concept or principle: process
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:
 application: set; material: AM material; material: as; engineering feature: sharp angles; process characterization: deposition gaps; engineering feature: hole size; process parameter: strut size; concept or principle: topology; concept or principle: process