A.0.1 B.0.2 C.0.4 D.0.6
A.3 B.2 C.5 D.8
A.中絲讀數(shù)0.8m B.上絲讀數(shù)0.8m C.下絲讀數(shù)0.8m D.上絲讀數(shù)0.7m