Because the scattering spectrum of nanoparticles is determined by nanoparticles size,so only part of the sample can be observed at single angle in measuring nanoparticles size.

• 因为纳米颗粒散射光所呈现的光谱是由颗粒粒径决定的,所以在纳米颗粒粒度测量中,单一角度测量只能观测到样品的部分情况。