本文介绍了以氟硅酸钠、纯碱为原料生产晶体氟化钠的工艺,并对操作条件作了详细的说明.A method of producing crystal sodium fluoride with sodium fluosilicate and sodium carbonate is introduced.在2008年6月2日, 氟化钠被自?成为新条目候选之候选条目.At 2 June, 2008, Sodium Fluoride was recom...
太空研究意味着国库的巨大开支.这不可避免地引起人们的警惕.Indeed , space research means tremendous investment from national purse, causing due alarm from people.德国舆论坚决反对使用其国库的钱来帮助挥霍的希腊人.German public opinion is firmly set against the public purse to...
现在,99%的小学生都亲手操作过电脑。Ninety-nine per cent of primary pupils now have hands-on experience of computers.这是他亲手种的花.This is the flower he planted with his own hands.这些蛋糕是你们亲手做的 吗 ?Did you make these cakes yourselves?...