The results of the isotropic variable thickness beam obtained by reduction of the solution show that the composite laminated beam theory and the method used for study are correct.
由其获得的各向同性变厚度梁的数值结果表明，本文建立的叠层梁理论和分析方法是正确的。
It is practically verified that this method exhibited less expense, easy operation, cast wall with uniform thickness, deformation decrease and cast defects reduction.
实践证明：该法铸造成本较低、操作简单，且铸件壁厚均匀、变形量小、铸造缺陷较少。
An exemplary embodiment of the invention provides a method for producing an ultra thin wall metallic tube by cold working method with significant wall thickness reduction.
本发明提供一种用冷加工法制造超薄壁金属管的方法。
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