双曲线轧辊是钢管矫正机的主要零件，国外用高精度的专门设备制造。过去，这种零件是依靠进口的。可是，原先答应卖给我们这种零件的人，如今却背信弃义，不卖给我们了。太原矿山机器厂的职工们没有被困难吓倒，他们学习和掌握了毛主席的世界观和方法论，敢于破除迷信，不畏艰辛，顽强探索，克服了种种困难，终于把这一零件加工出来了。听毛主席的话什么也不怕。这是毛泽东思想的胜利，这是奋发图强、自力更生的结果． Hyperbolic roll is the main part of steel tube straightening machine, with foreign countries with high precision special equipment. In the past, such parts were imported. However, those who originally promised to sell such parts to us are now repented of and will not sell it to us. The staffs in Taiyuan Mine Machinery Factory were not intimidated by the difficulties. They learned and mastered Chairman Mao’s world outlook and methodology, dared to break superstition, arduously exploit hardships, and strenuously explored and overcame various difficulties and eventually processed the part . I am not afraid to hear Chairman Mao’s words. This is the victory of Mao Tse-tung’s thought. This is the result of a vigorous and self-reliant effort.