二級頭呼吸器 èr jí tóu hū xī qì

DEFINITIONS

  1. (diving) regulator
  2. demand valve

CHARACTERS

二 èr
HSK 1
two; twice
級 jí level, rank, class; grade
頭 tóu head; top; chief, first; boss
呼 hū
HSK 4
breathe sigh, exhale; call, shout
吸 xī
HSK 4
inhale, suck in; absorb; attract
器 qì
HSK 5
receptacle, vessel; instrument