透とう水すい

noun

permeation; percolation; seepage

Technical term used in geology, civil engineering, and materials science for water passing through a porous medium.

• この土ど壌じょうは透とう水すい性せいが高たかい。

  This soil has high water permeability.

• ダムの透とう水すいを防ふせぐために、遮しゃ水すい壁へきが設せっ置ちされた。

  A cutoff wall was installed to prevent seepage through the dam.