drawing operation
... Routine Operation Drawing 常规调度图 drawing operation 拉延工序 Operation manual&eoectric drawing equipment 操作手册及用电器手册 ...
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汽车覆盖件拉延工序设计被称为薄板冲压成形领域的设计“黑箱”问题，而拉延模型面设计是其中的核心内容。
The design of drawing process for automobile panel is called as design "black box"in sheet metal forming domain, while the die-face design of drawing die is the key part.
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