HSK 7–9 · verb
对流
convection (of air or heat)
热空气上升，冷空气下来，这叫对流。
Rè kōngqì shàngshēng， lěng kōngqì xiàlái， zhè jiào duìliú。
Warm air rises and cool air sinks; this is called convection.
HSK 7–9 · verb
convection (of air or heat)
热空气上升，冷空气下来，这叫对流。
Rè kōngqì shàngshēng， lěng kōngqì xiàlái， zhè jiào duìliú。
Warm air rises and cool air sinks; this is called convection.