A.錯(cuò)誤 B.容許誤差 C.偶然誤差 D.相對(duì)誤差
A.應(yīng)力計(jì) B.無應(yīng)力計(jì) C.復(fù)位計(jì) D.應(yīng)變計(jì)
A.不大于200m B.不大于1000m C.可長達(dá)數(shù)千米 D.應(yīng)通過計(jì)算確定