About YOSHIDA TOSHIKI
About 日立金属 素材研
About KAWABATA MASAHIDE
About 日立金属 素材研
About YANO KENTARO
About 日立金属 素材研
About TAMURA TOSHIKI
About 日立金属 素材研
About 可鍛鋳鉄事情
About nodular graphite cast iron
About Casting defect
About 球状黒鉛鋳鉄
About 傾向
About 測定法