自足式半闭路混合气水下呼吸器
semiclosed-circuit mixed-gas scuba
变压器呼吸器结构改进
The advance on the breather in transformer
断路器闭合按钮
breaker closing push-button
呼吸器管路
mechanic ventilator circuit
medical quality
ventilator circuit
呼吸器管路更换
ventilator circuit change
按需补氧呼吸器
demand-controlled oxygenating respirator
鼻式持续正压呼吸器
nasal continuous positive airway pressure
长期呼吸器依靠
prolonged mechanical ventilator-dependent