二级刻度 meaning in Chinese

secondary calibration

The main contents as follows : 1 . studied the ideal second class calibration system , having studied kinds of parameters of the calibration system and environment ’ s influence on the phase difference measurement and have obtained many important results . put forward an engineering calibration system , and obtained the phase difference - - electric conductivity rate curve and analyze the system ’ s error margin etc . important
本文就这两大关键问题做了深入的研究,主要内容为如下: 1 .研究了相位感应测井理想二级刻度器模型中各种参数和环境对测量精度的影响,得到了许多重要的结论;同时提出了一种工程上切实可行的刻度系统方案,给出了相位差-电导率曲线以及系统误差等重要参数。