短語詞組短語hair line crack 毛發(fā)狀裂縫face hair crack 表面發(fā)裂hair -like crack 發(fā)裂slickensided hair crack 擦痕面發(fā)狀裂縫hair crack of rail head 軌頭發(fā)裂Crack hair 毛細裂縫 返回 hair crack