日にち変へん化か

noun

diurnal variation; daily variation; diel cycle

Scientific term for changes that occur over a 24-hour cycle, often used in meteorology, biology, and environmental science.

• 気き温おんの日にち変へん化かをグラフに示しめした。

  I showed the diurnal variation of temperature on a graph.

• この湖みずうみでは、溶よう存ぞん酸さん素その日にち変へん化かが大おおきい。

  In this lake, the diel cycle of dissolved oxygen is large.