单项选择题
A.阳模滚压 B.冷滚压 C.阴模滚压 D.热滚压
A.1~2 B.3~4 C.5~6 D.7~8
A.1:0.3~0.7 B.1:0.4~0.8 C.1:0.5~0.9 D.1:0.65~0.9