calibrate
verb [ T ] engineering, science specialized uk/ˈkæl.ɪ.breɪt/ us/ˈkæl.ə.breɪt/
划分刻度，标定
to mark units of measurement on an instrument such so that it can measure accurately
a calibrated stick for measuring the amount of oil in an engine 测量引擎中油量的标尺
校正（测量工具）
to check a measuring instrument to see if it is accurate