A.磨損小,定位精度高,抗震性高,結構復雜 B.磨損小,定位精度高,抗震性差,結構復雜 C.磨損小,定位精度低,抗震性高
A.60mm B.40mm C.50mm
A.X30.0,Z150.0 B.X30.0,Z50.0 C.X30.0,Z-50.0