본문

Multilingual
1
Ihn Namgung, Seung Ha, Jeong, Dae Hee Lee, Taek S, | 대한기계학회 | 2005 ,
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Sang Dug Kim, Dong Joo Song, | 대한기계학회 | 2005 ,
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US Department of Education [, ]
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US Department of Education [, ]