Methods: . Three deerskins (drown on 7 mm×7mm square reseaus )was pegged on the board by thumbtack. Then line scar and imperfects of rhomboid or rounded were made in the deerskins .
Methods: . Three deerskins (drown on 7 mm×7mm square reseaus )was pegged on the board by thumbtack. Then line scar and imperfects of rhomboid or rounded were made in the deerskins .
方法:.将鹿皮(标有7mm×7mm正方形网格)固定于木板上,然后在网格上分别设定线性疤痕、菱形或圆形缺损。