In large-scale shallow buried artificial ground freezing (AGF) engineering. frost heave control and energy-saving have always been the most critical problems. By the research and analysis. this manuscript points out the applicability and superiority of intermittent freezing in large-scale shallow buried freezing projects and conducts in situ tests for the freezing project of a metro e... https://www.spidertattooz.com/Metabo-HPT-NT1865DMASTM-18V-MV-15-Gauge-Brushless-Cordless-Angled-Finish-Nailer/