15031
After preliminary screening , the independent factors selected according to three - factor , three - level Box - Behnken design were inlet temperature ( X ( 1 ) ) , feed rate ( X ( 2 ) ) and carrier concentration ( X ( 3 ) ) .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None