在批林批孔和学习无产阶级专政理论运动的推动下,我所组成了以工人为主体的有领导干部和科技人员参加的步履式液压挖掘机“三结合”试制小组。经过一年半的设计、加工、组装,并经过一年的所内外试验,挖掘机的基本性能已达到设计要求。这 With the encouragement of the approval of the Lin Piao and the study of the theoretical movement of the dictatorship of the proletariat, we have formed a three-in-one trial group of walking hydraulic excavators with the participation of leading cadres and technicians who are mainly workers. After one and a half years of design, processing, assembly, and after one year of internal and external testing, the basic performance of the excavator has reached the design requirements. This