A.80mm B.100mm C.120mm D.150mm
A.凈反力標(biāo)準(zhǔn)值 B.凈反力設(shè)計值 C.平均反力標(biāo)準(zhǔn)值 D.平均反力設(shè)計值
A.4d18 B.4φ16 C.4M18 D.4φb18