A.膠基箔式應(yīng)變計(jì) B.紙基應(yīng)變計(jì) C.全橋式應(yīng)變計(jì) D.半橋式應(yīng)變計(jì)
A.5° B.10° C.15° D.20°
A.40 B.50 C.80 D.100