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		镍基高温合金铸件液态金属冷却定向凝固建模仿真及工艺规律研究
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			MODELING AND SIMULATION OF DIRECTIONAL SOLIDIFICATION BY LMC PROCESS FOR NICKEL BASE SUPERALLOY CASTING
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| 图2. 试样的三维模型及模壳 | 
| Fig.2. Three dimensional model of sample casting and shell mold | 
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