A.最小值 B.最大值 C.一方位最大值,一方位最小值
A.±2μm B.±3μm C.±4μm
A.1個(gè)分度值 B.1/2個(gè)分度值 C.1/3個(gè)分度值
A.0.002mm B.0.005mm C.1/10分度值