Search results: air pressure

oxygen plays an extremely important role in the earth's ecosystem, so its lack of just 5 seconds is enough to cause everything on this planet to be chaotic: every concrete building

the plastic chair is so familiar with our daily lives. there is also a round hole in every chair, we still use it when we need to use a plastic chair, but not many people question

sleeping when the plane takes off and landed, the body will not be able to balance the air pressure in the ear which can damage the ear.