A.d^2m/8 B.m^2d/8 C.d^2m/4 D.m^2d/4
A.0.01mA B.-0.01mA C.-0.5% D.0.5%
A.計(jì)算機(jī)控制技術(shù) B.機(jī)械技術(shù) C.測(cè)試技術(shù) D.傳動(dòng)技術(shù)