virgin metal

英 [ˈvɜːdʒɪn ˈmetl]

美 [ˈvɜːrdʒɪn ˈmetl]

网络  新炼金属

机械

双语例句

• There are large-area Variscan, Indo-Sinian granites in the central part of Jilin area, forest region of the northern part, Jilin Province. It is fettered by traditional metallogenic theory, this area is also called as a "Virgin soil" on the nonferrous metal exploration.
  在吉林省的吉林地区中部和北部大面积森林覆盖区，分布着大面积华力西期、印支期花岗岩类，受传统成矿理论的束缚，这一地区成为有色金属矿产勘查的“处女地”。