2003
- Manufacturing flaws such as porosity might also occur despite process parameter optimization and this may affect the mechanical properties .
 manufacturing process: Manufacturing; concept or principle: flaws; material: as; concept or principle: process parameter; concept or principle: optimization; concept or principle: mechanical properties
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: Manufacturing; concept or principle: flaws; material: as; concept or principle: process parameter; concept or principle: optimization; concept or principle: mechanical properties