A.順向一致 B.直條左右對稱 C.斷開和合鋪 D.橫條上下背向
A.0.5~1cm B.1~1.5cm C.1.5~2cm D.2~2.5cm
A.W/6.28 B.W/3.14 C.W/8+2.5 D.W/4+2.5