| | 4 5 | | | | 2 | | | | | | | | | | | | | | | | | | | 0.3 cm | 12 ~14 | 0.5 ~1.0 cm | 7 ~8 2.0 ~2.5 cm | | | | | | | | | | ⒈ | | | | ⒉ | | ⒊ | | ⒋ | | | ⒌ | ⒍ | | ⒎ | | | | | | | | | | | | | | | | | |