A. B17B5B17GxLl B17000B5000B17000GxLl C. B17000B5000B017000GyLl D. B17000B5000B005000GyLl
A. 6.8 B. 7.8 C. 6.25 D. 8.1
A. 凸模固定板 B. 模柄 C. 导柱 D. 垫板