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活柱筒(图1)是HZWA型金属支柱的重要零件。它是由两根特殊的π型钢对焊而成的,要求1:1250的斜度(由于加工条件的限制,允许在1:1400～1:1000的范围内变化),以保证支柱在自动夹紧后支柱阻力有微
The column (Figure 1) is an important part of the HZWA metal pillar. It is made of two special π steel butt welded together, requiring a slope of 1: 1250 (due to the processing conditions, allowing changes in the range of 1: 1400 ~ 1: 1000) to ensure that the strut in the automatic clip Post resistance pillar slightly tight