Objective: to prove oxygen mask oxygen inhalationdevice effectiveness in order to better educate patients, and improve the effectiveness of its use.
目的:证明氧气雾化吸入器面罩吸氧的有效性,以便更好的向病人进行宣教,提高其利用效能。
2
The testing device consists of a cylinder imitating human lungs and a piston moving inside to simulate inhalation and exhalation. Smoke in the artificial lungs underwent chemical tests.