Assertion: diver's rebreather | /r/UsedFor | use
Facets:
value: respectively
type: MANNER
value: with pure oxygen addition at depths
type: OTHER
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.