Secchi depths
A surname from Polish.
plural of Secchi depth
A species of vole, Myodes glareolus, former genus names Chletrionomys and Evotomys.
plural of Petun
科学者たちは水の透明度の季節変化を監視するため、複数の地点でセッキ深度の測定値を記録した。
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