3535
In each intensity of laser beam group , optimal flow rates of shielding gas condition for tensile property existed .
 concept or principle: laser beam; process parameter: flow rates; concept or principle: gas; machanical property: tensile property
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: laser beam, flow rates, gas, tensile property 
Answer:
 concept or principle: laser beam; process parameter: flow rates; concept or principle: gas; machanical property: tensile property