阀盘式呼吸阀
valve disc type breath valve
机械呼吸阀
mechanical breather valve
先导式呼吸阀
guiding type breath valve
压力真空呼吸阀
pressure and vacuum breather valve
真空呼吸阀
pressure vacuum vent valve
真空压力呼吸阀
vacuum and pressure breather valve
呼吸式安全阀
Breathing type safety valve
13C-尿素呼吸试验
13Carbon urea breath test
14C一尿素呼吸试验
14C-urea breath test (14C - UBT
1I型呼吸衰竭
Type II respiratory failure
Ⅰ型呼吸衰竭
Type Ⅰ respiratory failure