2136
Finally , increased spot density during processing is shown to increase the time of solidification , lowering temperature gradients and increasing the probability of equiaxed grain formation .
 density, solidification, temperature gradients, probability, equiaxed grain
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:
 density, solidification, temperature gradients, probability, equiaxed grain