Although airplane cabins are pressurized to protect passengers from the low barometric pressures at flight altitudes, researchers say sea-leel air pressure of 760 mmHg is not maintained.

• 尽管飞机舱加压是为了保护乘客在飞行高度免受低气压的压力，但是研究者认为水平面的760mmHg的气压难以维持。