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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4. EBRM制备TC4合金不同部位的SEM像 | 
| Fig.4. SEM images of bottom (a), middle (b) and top (c) of the TC4 alloy produced by EBRM | 
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