The paper gives several theorems for derivate of the function with finite limit at the infinite point and its strict proof.
给出了在无穷远处具有有穷极限的函数的有关导数的几个定理及其严格证明。
In order to prove that the optimum blank had better formality than the general rectangular blank, both finite limit diagrams were compared.
通过对比一般方形毛坯和优化毛坯的成形极限图，证明优化毛坯具有更好的成形性。
In order to prove that the optimum blank had better formality than the general rectangular blank, both finite limit diagrams were compared.
通过对比一般方形毛坯和优化毛坯的成形极限图，证明优化毛坯具有更好的成形性。
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