Catalytic synthesis of isoamyl isovalerate by nano - h4siw12o40 sio 纳米复合钨硅酸催化合成苹果油
2.
Tobacco and tobacco products . determination of nicotine purity . gravimetric method using tungstosilicic acid 烟草和烟草制品.尼古丁纯度的测定.使用钨硅酸的重量分析法
3.
Tobacco and tobacco products - determination of nicotine purity - gravimetric method using tungstosilicic acid iso 13276 : 1997 烟草和烟草制品.烟碱纯度的测定.使用钨硅酸的重量分