211596
Pump and Compressor Technology Centrifugal pumps and compressors are defined by the Hydraulic Institute as “ a kinetic machine converting mechanical energy into hydraulic energy through centrifugal activity .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None