但是他还是拼尽力气，告诉了我最后一件事。

But he took the trouble to tell me one last thing.

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本文根据最优化设计原理，推导并建立了大锻件多件拼锻节材的最优化数学模型。

Based on the principle of optimum design, an optimization mathematical model of forging multi-pieces for saving material has been advanced.

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