在毛主席革命路线指引下,我们实行领导、工人,科技人员三结合,认真总结了回龙火炕和塑料薄膜炕的优缺点,根据这两种炕的升温道理,于1973—1974年在所内进行了回流炕的试验研究。1975年,据泗水、邹县、济宁、兗州、汶上等县的不完全统计,共建炕4,200个,凡按技术要求建炕和管理的,都比较成 Under the guidance of Chairman Mao’s revolutionary line, we implemented the combination of leadership, workers and scientific personnel, and conscientiously summed up the advantages and disadvantages of the Huilong kang and the plastic film kang, which were carried out in 1973-1974 according to the warming reason of these two kangs The back of the kang test study. In 1975, according to the incomplete statistics of Surabaya, Zouxian, Jining, Yanzhou and Wenshang counties, a total of 4,200 kangs were built, and all kangs and management according to the technical requirements were compared