Accuracy Check and Comparative Analysis of Horizontal Fiber-Optic Gyro Inclinometer in Freezing HoleGuojing Jiang, Fangzheng Li, Xiaomin Zhou, Wei Gao and Bingbing CuiE3S Web Conf., 218 (2020) 03025DOI: https://doi.org/10.1051/e3sconf/202021803025