• A mineral that is a natural alloy of osmium and iridium with small inclusions of platinum, rhodium, and other metals, used in needles and wearing points.

    一种矿石少量其他金属矿石铱锇的自然合金用于制造针头耐磨尖端。

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  • A mineral that is a natural alloy of osmium and iridium with small inclusions of platinum, rhodium, and other metals, used in needles and wearing points.

    一种矿石少量其他金属矿石铱锇的自然合金用于制造针头耐磨尖端。

    youdao

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