The study of the motion of air and other gases, and their effects on objects moving through them

A forging machine that uses compressed air to drive a hammer head; air hammer

a fitness or therapeutic practice of exposing the body to fresh air (e.g., in forests or by the sea) to improve circulation and the nervous system

To intentionally create a certain atmosphere or spread rumors to mislead others or test their reaction; to put out feelers; to create a false impression.

aerodynamic force; power generated by the movement of air

A machine that draws in air from the atmosphere and compresses it to produce high-pressure air.

The process of collecting samples of air for testing or analysis

device used to collect samples of air for testing or analysis

the condition of the air within the environment, especially regarding pollutants

pollution of the atmosphere by harmful substances

the flow of air; a draft

air ventilation or circulation; airiness

a kitchen appliance that cooks food by circulating hot air around it

The process of regulating the temperature, humidity, and cleanliness of the air inside a building or vehicle; often shortened to [[空调|空調|kong1 tiao2]]

machine used to regulate the temperature, humidity, and cleanliness of the air inside a room or vehicle

machine used to regulate the temperature and humidity of a room or vehicle

The level of pollutants present in the air, used to measure how clean or polluted the atmosphere is.

Air stored in a container under higher than atmospheric pressure, used for vehicle braking or powering pneumatic tools

the force that acts opposite to the relative motion of an object moving through the air (e.g., atmospheric drag on a projectile or the resistance on a ship's hull above the waterline)

A method of spreading disease where germs travel through the air to infect others.

air plant; specifically the genus [[铁兰属|鐵蘭屬|tie3 lan2 shu3]]

a braking system for vehicles, especially trains and heavy trucks, that uses compressed air to apply the brakes