鋸齒

鋸齒(Serration)是指一個尖銳或是類似齒的物體,側面有一排像鋸子一様,有許多突起的邊緣。鋸齒的切割面和被切割物體有多個接觸點,其接觸面積比平滑的切割面要小,因此產生的應力也會比較大,會讓被切割物體上出現數個破口,鋸齒再往復移動,使破口加大,產生切割的效果[1]

鼬鯊的牙齒邊緣呈鋸齒狀

參考資料

  1. Alloway, David. . University of Texas Press. 2000: 38. ISBN 978-0-292-70492-3.
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