单词	four strata structures
释义	four strata structures 四层结构
随便看	polymetallic ore belt polymetallic ore body polymetallic ore deposit Poly-metallic ore deposit polymetallic ore field Polymetallic prospecting polymetallic silver-zinc deposit polymetallic sulfide polymetallic sulfide deposit Polymetallic sulfide ore poly-metallic sulfide ore polymetallic sulphide Polymetallic sulphide concentrate Polymetallic sulphide mine polymetallic sulphide ore poly-metallic sulphide ore polymetallic sulphide ores Poly-metallic sulphide ores polymetallie deposit-accumulated area polymetallie sulfide ore polymetallism polymetallocene Polymetallogenic polymetallogenic belts polymetalloorganosiloxane