362
The HAZ of laser-welded joints could only be divided into two regions , viz. , B2 + α2 and B2 + α2 + O .
 concept or principle: HAZ; material: be; material: O
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: HAZ; material: be; material: O