目的用数值模拟的方法获得加压供氧面罩无余压状态下呼气活门的呼气阻力。
Objective To obtain the expiratory resistance in pressure oxygen mask under no overpressure condition with numerical simulation method.
对比不同的供氧方法，选择blb氧气面罩用于青藏客车供氧。
Compared different oxygen supply methods, BLB mask was chosen for oxygen supply system of passenger cars on Qingzang railway.
面罩吸氧适合低出生体重儿，可替代头罩吸氧，是早产儿理想的供氧方法。
Conclusion: inhalation oxygen with facemask is proper to low birth weight infants, which can replace head net, which is also an ideal way to supply oxygen.
面罩吸氧适合低出生体重儿，可替代头罩吸氧，是早产儿理想的供氧方法。
Conclusion: inhalation oxygen with facemask is proper to low birth weight infants, which can replace head net, which is also an ideal way to supply oxygen.
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