显然, 这些生产商们知道ED与萤石之间的差别.Obviously, they know the difference between fluorite and ED.矿物质图片画廊.外观紊乱的方解石突出几何精确度的萤石.The seeming disorder of calcite highlights the geometric precision of fluorite.该氧化铈还优选具有萤石类似结构的超晶格结构.The ceriu...
He cleaned the flakes away with his coat sleeve.他用大衣袖子把碎屑掸掉。His work clothes, having become saturated with oil, had to be cleaned.他的工作服已经被油浸透，该洗洗了。She meticulously cleaned the gun and locked it away in its case.她小心翼翼地把枪擦...