二
级
头
呼
吸
器
è
r
j
í
t
ó
u
h
ū
x
ī
q
ì
Definitions
1. (diving) regulator
2. demand valve
Components
二级头
èr jí tóu
–
second stage (diving)
呼吸器
hū xī qì
–
ventilator (artificial breathing apparatus used in hospitals)
Related Words
备用二级头呼吸器
bèi yòng èr jí tóu hū xī qì
–
backup regulator