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PROCEDURES AND PREPARATION FOR THE FORMATION OF KINGDOM CHARACTERISTICS
PROCEDURES AND PREPARATION FOR THE FORMATION OF KINGDOM CHARACTERISTICS
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机译:形成王国特征的程序和准备
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摘要
To form metal sheet blanks into taper tubes, a die is provided which has a conical cavity into which a conical punch plunges. The punch is led into the die along a curve. Taper tube shells can easily be fabricated by this method.
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