About NAKAKO TAKEFUMI
About 日新製鋼
About TAKEZOE AKINOBU
About 日新製鋼
About ONA HIROSHI
About ICHIKAWA SHIGEKI
About 日新製鋼技報
About vibration proofing material
About Special forming
About Clad materials
About 制振鋼板
About ロール成形
About 折れ曲がり
About 現象
About 解析