It is also held that in areas where stream sediments are not well developed, the utilization of stream sediment survey with the help of grid soil survey ca...

 
  • 并提出在水系沉積物不甚發(fā)育的地區,以水系沉積物為主,輔以網(wǎng)格法土壤測量,則能更有效地提高找礦效果。
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