Assertion: diver's rebreather | /r/UsedFor | a combination of oxygen
Facets:
value: respectively
type: MANNER
value: from air
type: TRANSITIVE-OBJECT
value: from one tank
type: LOCATION
Source sentences:
text: Draeger rebreather back-packs DM20 and DM40 were respectively for use with pure oxygen addition at depths not exceeding 20m, and for a combination of oxygen from one tank and air from the other at depths up to 40m.