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Sukenari TSUNAKAWA
Engineering Dept., Touin University of Yokohama
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Shigeyuki INOSE
Engineering Dept., Touin University of Yokohama Furukawa Aluminum Co.
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Sachiko AKIMOTO
Engineering Dept., Touin University of Yokohama
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Shigeki GOKANO
Engineering Dept., Touin University of Yokohama
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Kunihiko ICHIKAWA
Research and Development Div., ALPOLIC Co.