1142
In , it was applied to avoid small struts by controlling the minimum or maximum length scale of the features i.e .
 machine or equipment: struts; process characterization: length scale
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:
 machine or equipment: struts; process characterization: length scale