以下为句子列表：
英文: Based on the analysis of the advantage and disadvantage of both overseas and domestic closed cold forging equipment, closed cold forging equipment consisting of a NC precise forging hydropress and a set of hydraulic drive female die has been developed, he
中文: 摘要在分析了国内外现有闭式冷精锻装备的优缺点的基础上，开发研制了数控精锻液压机和液压传动凹模模具装置，构成闭式冷精锻设备，实现了圆锥齿轮等轿车关键零件的精密模锻生产。
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英文: Steps were made on the female die surface to make up for the thickness different of the blanks.
中文: 凹模表面和型腔加工了台阶以补偿坯料的厚度差值。
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