942
In the first set , the wall axes were parallel to the scan axes , such that the laser path length varied from layer to layer with the laser path either being parallel or perpendicular to the wall .
 set, laser, layer, layer, laser
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:
 set, laser, layer, layer, laser