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다국어입력
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Chul Hue Park, Sang Jun Ahn, Hyun Chul Park, Sung, | 대한기계학회 | 2005 ,
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Seong-Sik Yoon, Sungchul Kang, Seung-Kook Yun, Se, | 대한기계학회 | 2005 ,
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US Department of Education [, ]
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Centre for Independent Studies [, ]
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