Assertion: solder's flux | /r/HasProperty | necessary
Facets:
value: to reduce the oxides
type: PURPOSE
Source sentences:
text: Flux is necessary to reduce the oxides that tend to form whenever you have hot metals in contact with the air.
text: Flux if wire solder does not include a flux core or if the additional flux is needed
text: Flux is necessary to reduce the oxides that tend to form whenever you have hot metals in contact with the air.