About YUDA NORIO
About 国立弓削商船高等専門学校紀要(Web)
About special school
About creativity
About education
About propeller
About model
About trial and error learning
About problem solving
About school education
About casting(metal)
About aluminum
About file
About finishing
About end mill
About manufacturing
About Engineering education
About Ship structure and materials
About 創造性教育
About 試み
About プロペラ
About 模型