地球人

Could you change these French francs for me?

能给我兑换这些法国法郎吗？

Organosols of silver and gold nanoparticles stabilized by sodium oleate were prepared with high efficiency by simple phase transfer of their hydrosols to isooctane.

研究了一种简便、高效方法把油酸钠包覆的银和金纳米粒子从水相转移到异辛烷中制备有机溶胶。