“Robert Abbott Hadfield”的概念、定义、翻译、参考文献-科学参考

单词	Robert Abbott Hadfield
释义	Robert Abbott Hadfield Encyclopedia 工学﹝矿冶人物﹞释 Robert Abbott Hadfield哈德菲尔德，R.A. (1858-11-28～1940-09-30) 英国冶金学家。
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