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〔成形工序〕
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plate forging
板锻造
在普通冲压成形的冲裁、拉深、弯曲、翻边等工序上,加入镦压、变薄、挤压等体积成形工艺的复合成形工序。又称流动控制成形、板料体积成形、板料冲锻成形等。
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history of bast crops cultivation
history of bast fiber textile
History of Beijing-Hangzhou Canal
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history of Brazil aerospace
history of bream culture in China
history of British aerospace
history of buck-wheat cultivation
History of Buddhism in Han Dynasty,Wei Dynasty,Jin Dynasties,Southern and Northern Dynasties
history of Bulgaria
History of Burmese Literature
history of butterfish fishing in China
history of Canada aerospace
history of canal engineering technology in ancient China
history of canals in the world
history of Carangidae fishing in China
history of carp culture in China
history of carp fishing in China
history of cartography
history of cattle raising
history of cattle raising in ancient China
history of celestial body
history of ceramics
history of Changjiang river water conservancy
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