美国红阀公司出品的A型无故障系统700从热储系统里提供气压，一个这种供气系统可以同时操作几个夹管阀。
The Type A fail-safe system 700 from Red Valve is sized to provide air pressure in the reservoir system to operate multiple valves from one reservoir.
Schneider博士说，技术中的挑战是在发现一个在鼻部和喉部提供气压同时提高舒适性方法，加热和加湿的空气是关键。
The "challenge in technology" was to find a way to provide air pressure in the nose and throat while improving comfort, Dr. Schneider said. Warming and humidifying the air proved to be the key.
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