削さく摩ま

noun

denudation; ablation

Geology term for the wearing away of the earth's surface by natural processes such as erosion and weathering.

• 削さく摩ま作さ用ようによって地ち形けいが変へん化かする。

  The landscape changes due to denudation.

noun

scraping; wearing down

General physical sense of scraping or wearing something down by friction or abrasion; less common than the geological use.

• 機き械かい部ぶ品ひんの削さく摩まを防ふせぐために潤じゅん滑かつ油ゆを使つかう。

  Use lubricant to prevent scraping of machine parts.