1895
The most important limits are the minimum feature size , which , in practice , is limited not only by the powder size and laser spot size , but also by the 3D model slicing accuracy and the resulting hatch and contour scanning employed .
 concept or principle: limits; process parameter: minimum feature size; material: powder; process parameter: laser spot size; engineering feature: 3D model slicing; process parameter: contour scanning
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: limits; process parameter: minimum feature size; material: powder; process parameter: laser spot size; engineering feature: 3D model slicing; process parameter: contour scanning