About: http://webisa.webdatacommons.org/370593525

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	However, with such joint, there is a problem in that the mechanical property such as hardness or tensile strength may suddenly change at the boundaries between two materials of different qualities.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr