Assertion: manganese | /r/ObjectUse | used as manganese zinc ferrite
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Mn 3 O 4 is sometimes used as a starting material in the production of soft ferrites e.g. manganese zinc ferrite, and lithium manganese oxide, used in lithium batteries.
text: Mn 3 O 4 is sometimes used as a starting material in the production of soft ferrites e.g. manganese zinc ferrite, and lithium manganese oxide, used in lithium batteries.