The structural characteristics of cysteamine monolayers formed on gold were investigated by surface - enhanced Raman scattering.本文报道了我们采用表面增强拉曼散射光谱方法研究在金电极表面吸附的半胱胺单分子膜的结构特征....
He was hewing away at the trunk of the tree.他不停地照着树干砍去.He was hewing away at the trunktree.他不停地照著树干砍去.I learned in a hard school and I knew the importance of hewing to the line.我在一所要求严格的学校里念过书,因此知道服从纪律的重要性....