residence time

Noun

(hydrology) The average time for which a particular molecule of water will remain in a body of water.

Japanese Meaning

水体内における分子の平均滞留時間 / 水体内で水分子が留まる平均期間

Scientists measured the lake's residence time to assess how quickly pollutants would be flushed out.

科学者たちは、汚染物質がどれだけ早く排出されるかを評価するために、その湖の平均滞留時間を測定した。

Sense（1）

(hydrology) The average time for which a particular molecule of water will remain in a body of water.

residence times

（ plural ）