在无产阶级文化大革命和批林批孔运动的推动下,电化工程局和有关单位广大职工,认真贯彻执行毛主席“独立自主,自力更生”的方针,坚持工人、干部、技术人员三结合,共同努力,经过长期团结,战斗,试制成功移频自动闭塞及机车信号。为了巩固、发展这一成果,并使之应用到运输生产中去,部科技 With the proletarian cultural revolution and the pro-forest campaign approved by Lin, the staff and workers of the Bureau of Electrical Engineering and relevant units seriously implemented Chairman Mao’s principle of “independence, self-reliance and self-reliance” and insisted on the combination of workers, cadres and technical personnel, After long-term unity, fighting, trial frequency shift successfully blocked and locomotive signals. In order to consolidate and develop this achievement, and to apply it to transportation and production, the ministry of science and technology