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四桥处广大建桥战士,高举毛泽东思想伟大红旗,发扬敢想敢干的革命精神,继620工地用粘土制造沉井刃脚内模取得成功之后,在4020大桥的建设中又成功地用砂土作内模制造了沉井刃脚。
After the successful construction of the 4020 Bridge, it succeeded in using the sand to build a bridge between the bridge and the bridge. At the bridge site, the vast majority of bridge-building fighters held high the great red banner of Mao Zedong Thought and promoted the revolutionary spirit of daring to dare. Soil made of internal mold sunken blade.