You may have heard the term hairline fracture. This is a single fracture that is very small, like the width of a hair.
你可能听过“骨裂”这个术语，这是一种裂缝如头发般宽的单处骨折。
Nomenclature: Spontaneous osteonecrosis of the knee (SONK) was previously used synonymously, but term is considered misnomer given underlying etiopathogenesis corresponds to insufficiency fracture.
命名：既往曾称为膝关节自发性骨坏死，但这一命名不能反映技能不全性骨折的发病机理。
This paper summed up the recent works about failure mechanisms, fracture toughness and failure criteria of concrete which are monotonously loaded in a short-term.
本文总结了在短期单调荷载作用下混凝土的破坏机理，断裂韧度和强度理论方面的研究成果。
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