475
However , using AM on a larger scale is still challenging , as traditional methods require the AM machines to be larger than the manufactured structure .
 manufacturing process: AM; material: as; machine or equipment: AM machines; material: be; concept or principle: manufactured
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:
 manufacturing process: AM; material: as; machine or equipment: AM machines; material: be; concept or principle: manufactured