1086
The research project addressed four issues for a long-term application of AM technologies : identification of barriers for AM applications , cost estimation for AM application , design of hybrid additive-subtractive process chains , and quality management with AM .
 concept or principle: research; manufacturing process: AM technologies; manufacturing process: AM; concept or principle: cost estimation; manufacturing process: AM; engineering feature: design; enabling technology: process chains; concept or principle: quality; 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: research; manufacturing process: AM technologies; manufacturing process: AM; concept or principle: cost estimation; manufacturing process: AM; engineering feature: design; enabling technology: process chains; concept or principle: quality; manufacturing process: AM