在深入开展批林批孔的大好形势下,我国自己设计、自己制造的第一套综合机械化采煤设备已在山西某局四矿井下进行工业试验,并初见成效。这是在毛主席“独立自主,自力更生”方针指引下走自己工业发展道路的又一丰硕成果。 Under the good situation of further developing the approved bore holes, the first comprehensive mechanized coal mining equipment designed and manufactured by our country has been industrially tested in the fourth underground station of Shanxi Bureau and achieved initial success. This is yet another fruitful result of taking the path of industrial development under the guidance of Chairman Mao’s principle of “independence and self-reliance.”