短語詞組短語tripping operation sequence 跳閘程序accident tripping operation 差動(dòng)保護(hù)tripping operation petroleum string 起下管柱tripping operation for lightning 雷擊跳閘history records of tripping operation 跳閘歷史記錄critical value of tripping operation 跳閘臨界值 返回 tripping operation