Metallic mines的用法和樣例：
例句
- Prospecting metal mine goafs by Rayleigh wave method is introduced.
介紹用瑞雷波法檢測金屬礦山采空區。 - Research on continuous ore drawing and haulage equipment for underground metal mines has widely been done in main foreign countries with mining industry.
國外主要礦業(yè)國家對地下金屬礦山連續出礦運礦設備進(jìn)行了深入的研究。
