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作者根据多年从事钻攻类标准主轴箱设计的经验对组合所的ZD27设计指导资料及《组合机床设计》一书中的有关部分提出了改进意见。图3幅
The author put forward suggestions for improvement on the ZD27 design guidance materials and related parts in the book “Combined Machine Tool Design” according to the experience of many years engaged in standard drilling headstock design. Figure 3 frame