9029
This paper presents an in-situ quantitative inspection technique for assessing the whole of the powder bed post raking , by using fringe projection profilometry .
 in-situ, inspection, powder bed
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 in-situ, inspection, powder bed