Computer has become part of our life and it plays an important role in our policy, economy,society and also people’s da......

用高分辨固体ＭＡＳ＾２９Ｓｉ－ＮＭＲ法测定Ｙ型分子筛的骨架硅铝比，直接可靠，优于依靠经验公式的Ｘ射线衍射法和红外光谱法，但谱峰重叠，严重妨碍实际应用。用固体......