From all possible members of the spinel groups, hercynite and galaxite, were found to be the most efficient.
在所有可能的石矿族成员中,铝石和锰铝石被发现是最有效的(添加剂)。
From all possible members of the spinel groups, hercynite and galaxite, were found to be the most efficient.
在所有可能的石矿族成员中,铝石和锰铝石被发现是最有效的(添加剂)。
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