1102
In particular , front wire feeding eliminated the occurrence of pores and micro-cracks , when compared to side wire feeding .
 process parameter: wire feeding; machanical property: pores; concept or principle: micro-cracks; process parameter: wire feeding
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:
 process parameter: wire feeding; machanical property: pores; concept or principle: micro-cracks; process parameter: wire feeding