About DAIKOKU TAKASHI
About 三菱重工業長崎研
About MASUYAMA FUJIMITSU
About 三菱重工業長崎研
About FUJIMURA HIROSHI
About 三菱重工業長崎研
About KINO HIRONORI
About 三菱重工業長崎研
About NAKANISHI MUTSUO
About 住友金属工業中技研
About TANAKA KEN'ICHI
About 住友金属工業中技研
About high alloy steel
About 9Cr-2Mo鋼
About Mechanical properties
About 大径
About 厚
About 肉
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