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Different samples are manufactured using AWS ER70B-6 as filler material , using as cooling approaches free convection and air jet impingement , with different interlayer idle times .
 concept or principle: samples; concept or principle: manufactured; material: ER70B-6; material: as; material: material; material: as
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: samples; concept or principle: manufactured; material: ER70B-6; material: as; material: material; material: as