closed circuit rebreather
Technical diving equipment that recycles exhaled gas, removing carbon dioxide and adding oxygen, allowing longer dives without bubbles.
A closed circuit rebreather recycles exhaled gas, enabling long dives.
Open-circuit scuba releases exhaled gas as bubbles, while a closed circuit rebreather recycles it.
Compound of 閉鎖式 (closed type) + リブリーザー (rebreather), a loanword from English.