A.微傾螺旋 B.物鏡調(diào)焦螺旋 C.微動(dòng)螺旋 D.目鏡調(diào)焦螺旋
A.1985 B.1980 C.1975 D.1954
A.上絲讀數(shù)-下絲讀數(shù) B.前視讀數(shù)-后視讀數(shù) C.后視讀數(shù)-前視讀數(shù) D.下絲讀數(shù)-上絲讀數(shù)