A.0.5~0.6 B.0.6~0.65 C.0.65~0.70 D.0.70~0.80
A.剖面圖 B.剖視圖 C.零件圖 D.識(shí)圖
A.50%~60% B.60%~70% C.70%~80% D.80%~90%