我厂革命职工在无产阶级文化大革命的促进下,克服了人员少、设备差、技术力量薄弱及生产任务艰巨的困难,紧跟毛主席思想,反复学习老三篇,破私立公,试制成功新型 YBN-20型变量叶片泵。YBN-20型变量叶片泵的试制过程,是活学活用毛主席著作的过程,是无产阶级同资产阶级两条道路斗争的过程。毛主席教导我们;“在生产斗争和科学试验范围内,人类总是不断发展的,自然界也总 Under the promotion of the proletarian cultural revolution, the revolutionary workers of our factory have overcome the difficulties of small personnel, poor equipment, weak technical forces, and arduous production tasks. We have kept abreast of Chairman Mao’s thinking, repeatedly learned the old three articles, broke private laws, and successfully implemented new types of trials. YBN-20 variable vane pump. The YBN-20 variable vane pump’s trial production process is a process of living and studying Chairman Mao’s writings. It is a process of struggle between the proletariat and the bourgeoisie. Chairman Mao taught us; "In the sphere of production struggle and scientific experimentation, humanity has always been developing, and nature is also always