Assertion: corrosion | /r/HasProperty | varying origin
Facets:
value: to corrosion currents
type: CAUSE
value: due to the action of dissolved oxygen
type: CAUSE
value: widely
type: DEGREE
Source sentences:
text: Corrosion can be of widely varying origin and nature due to the action of dissolved oxygen, to corrosion currents set up as a result of heterogeneities on metal surfaces, or to the iron being directly attacked by the water.