About SHIRASUNA YOSHIO
About NOZUE AKIRA
About OKUBO TADATSUNE
About KURIBAYASHI KAZUHIKO
About HORIUCHI RYO
About ISHIMOTO SEIJI
About 日産自動車
About SATO HIROSHI
About 日産自動車
About titanium base alloy
About Heat treatment technology
About Weld zone
About Ti
About 熱処理
About 溶接部
About 高靭性化