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我厂生产的ZL系轮式装载机动臂见图1,结构尺寸长、孔距大(A尺寸2660～4000mm)、尺寸公差和形位公差要求项目多
I plant the ZL wheel loader wheel shown in Figure 1, the structure of a long, large hole distance (A size 2660 ~ 4000mm), dimensional tolerances and geometric tolerance requirements of the project more