refluxing

1.回流,反流,倒流,逆流;退潮

2.【化】回流加热

1.a returning flow of something

2.a backflow of liquid in the opposite direction to its normal movement, e.g. the regurgitation of stomach and peptic juices associated with acid indigestion and hiatal hernia

3.a method of heating liquid so that escaping vapor is condensed and returned to the liquid

1.to heat a liquid in a container with a condenser that catches and returns escaping vapor