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About YAMAMURA KAZUHIRO
About 日立金属 特殊鋼カンパニー
About TOBISE MASAHIRO
About 日立金属 コーポレートビジネスセ
About 日立金属技報
About niobium base alloy
About nickel containing alloy
About titanium containing alloy
About hydrogen brittleness
About impurity
About Oxygen
About intermetallic compound
About internal stress
About grain refinement
About inorganic separation membrane
About Hydrogen
About modification
About membrane and film
About Mechanical properties
About Nb
About Ni
About Ti
About 合金
About 水素分離膜
About 耐水
About 脆性