About: http://webisa.webdatacommons.org/140435292

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	IntroductionWith the needs of clean and oil-free pollution compressed air in food, medicine, fuel cells, and other industries, the investigation of oil-free scroll compressor research has been one of hot topics in scroll compressors.
http://www.w3.org/ns/prov#wasQuotedFrom	hindawi.com