polymetal ore的用法和樣例：
例句
- The basalt of the Indo-Chinese epoch in the eastern Gejiu plays an important role in the formation of the Gejiu tin-polymetallic ore deposits.
摘要箇舊東區印支期玄武岩對箇舊錫多金屬礦床的形成有重要的作用。 - The test research to optimize processing parameters had been carried out systemically for Bi roughing of certain multi-metal ore containing Bi, Zn and Fe.
對某鉍鋅鐵多金屬礦的鉍粗選工藝進行了系統的參數優化試驗研究。
