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中文摘要：
通过改变超声的路径长度，纳米粒子暂停的超声的变细光谱被测量。基于 McClements 和 BLBL 模型，最佳规则化技术被采用到逆为纳米粒子的粒子尺寸的分发。实验被执行与 1% 的体积部分测量水的纳米钛二氧化物暂停的粒子尺寸的分发。超声的测量结果从 TEM 传播电子 Mi- croscope 和离心的沉积粒子尺寸分析器与那些显示出好坚固性，它显示有超声的变细光谱的纳米粒子的粒子尺寸的那测量分布可行、可靠。
英文摘要：
Through varying the ultrasonic path length, the ultrasonic attenuation spectrum of the nanometer particle suspensions is measured. Based on the McClements and BLBL model, the Optimum Regularization Technique is employed to inverse the distribution of particle size for nanometer particles. Experiments are carried out to measure the distribution of particle size of aqueous nanometer titanium dioxide suspension with volume fraction of 1%. The ultrasonic measurement results show good consistence with those from TEM （Transmission Electron Mi- croscope） and centrifugal sedimentation particle size analyzers, which indicate that measuring distribution of the particle size of nanometer particles with the ultrasonic attenuation spectrum is feasible and reliable.
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