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分析了不锈铜器皿拉伸模表面粘附机理。
The adhesive mechanism of a drawing die has been analysised.
youdao
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介绍了一种新型的变断面管无模拉伸成形方法。
A new method form aking arbitrary section tube was introduced.
youdao
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介绍了一种新型的变断面管无模拉伸成形方法。
A new method form aking arbitrary section tube was introduced.
youdao