The ancient Greeks and Hindus ground iron into powder and took it as a treatment for weakness. They believed that iron gave its strength to the person taking it.
古希腊人和印度人把铁磨成粉，服用铁粉治疗虚弱。他们相信铁能把力量给与服用它的人。
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Air plasma spray technique was used to gain a thin and porous anode layer of intermediate temperature solid oxide fuel cell SOFC by taking charcoal active powder as pore-forming agent in this paper.
采用大气等离子喷涂技术，以活性炭粉作为成孔材料，获得了薄且多孔的中温固体氧化物燃料电池s OF C阳极层。