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A cylinder connected to a cone is often met in sheet metal work.
园柱管与园锥相接合，在钣金工作中是经常遇到的。
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The unfold of sheet metal is the most important work of the process.
钣金展开是加工过程中最重要的一道工序。
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The unfold of sheet metal is the most important work of the process.
钣金展开是加工过程中最重要的一道工序。
youdao