About KOWATA TOSHINORI
About HORIE HIROSHI
About NAKAMURA MITSURU
About HIRATSUKA SADATO
About CHIDA AKIO
About 日下レアメタル研
About nodular graphite cast iron
About Transformation structures,work structures
About 薄肉
About 球状黒鉛鋳鉄
About 黒鉛
About 粒数
About ビスマス
About 希土類元素
About 複合添加