请问pig iron ,per capita,thermal power plant

请问pig iron ,per capita,thermal power plant pig iron pig iron 是什么意思? pig iron 的来源是什么 pig iron是什么?这跟猪有什么关系? MAGNETIC IRON ORE,PIG IRON FOR STEEL MAKING,ELECTROLYTIC ZINC INGOT,大侠翻译求求了 请问美语中pig iron Iron iron 请问I' m a pig . pig 请问猪八戒的英文是 Pig king per per per 请问申请大学中的Average applicants per Pig people inside and outside mirror请问是什么意思