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		电子束快速成形制备TC4合金的组织和拉伸性能分析
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			Microstructure and Tensile Property of TC4 Alloy Produced via Electron Beam Rapid Manufacturing
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| 图3. 原始β晶粒和α板条宽度与沉积高度的关系 | 
| Fig.3. The changes of the prior β grain size and the width of α lath along the building height | 
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