Tween-60 Span-20 Span-80 and Polyether surfactants were selected lubricating oils containing nano-rare earths and Fe particles were prepared .

选择了 吐温 （ Tween ） -60、司本 （Span）-20、司本 （Span）-80和聚醚表面活性剂，配制了纳米稀土（RE）和铁粒子的复合润滑油。