About: http://webisa.webdatacommons.org/406155364

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	Therefore, there is a problem that with respect to the magnetic recording medium having a surface roughness of Rmax 15 nm or less, the technique is completely useless as a friction coefficient management technique.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com