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本文介绍了铁路客车的典型拉延件——通风口的冲压工艺改进情况,并对改进后在材料、工时、模具等方面的经济效益作了介绍。
This paper introduces the typical drawing of railway passenger car - the improvement of the punching process of vents, and introduces the economic benefits in terms of materials, working hours, molds and so on.