hammerstone

名词 n.
中文释义

英文释义

名词 n.
  1. A type of stone used to hit or strike in a similar way to a modern-day hammer.
    — Striking a hand-held isotropic block or cobble (a core) with a hammerstone initiates a cone-shaped crack at roughly 60° from the axis of force, exemplified by the hole in a plate glass window made by a pellet gun (18, 19 ).

词形变化

hammerstones plural

词源

From hammer + stone.
0 次浏览 数据来源: Wiktionary