| 1. | Frequency spectral analysis for the ultrasonic attenuation of carbon fiber reinforced plastics
碳纤维复合材料对超声衰减的频域分析 |
| 2. | Method for measurement of ultrasonic attenuation coefficient of solid by pulse echo technique
用脉冲回波技术测量固体超声波衰减系数的检测方法 |
| 3. | Standard test method for measurement of ultrasonic attenuation coefficients of advanced ceramics by pulse - echo contact technique
用脉冲反射接触技术测量高级陶瓷超声衰减系数的标准试验方法 |
| 4. | The third chapter in the paper presents a method that we can select suitable ultrasonic frequence in the analysis of the ultrasonic attenuation
在论文第四章对超声波在液压缸中衰减的分析中提出了选择合适超声频率的一种方法。 |
| 5. | The correlation between ultrasonic attenuation and particle size distribution was given by combining experiments with data analysis , and an inverse parameters optimization method , genetic algorithm , was applied for particle size distribution
将所推导的模型结合实验和数据分析以确定超声波衰减与粒度分布的关系，且采用遗传算法反演计算获得矿浆中粒的粒度分布。 |
| 6. | Based on analyzing the theoretical model of ultrasonic attenuation , the formula was integrated into the ultrasonic attenuation model , and the relation of ultrasonic attenuation to pulp density and particle size was derived
在分析超声衰减基本理论模型的基础上，将不同粒径的筛下累积含量集成到超声波衰减模型中，推导出超声波衰减与矿浆浓度、粒度之间的关系模型。 |
| 7. | Ultrasonic distance measurement is the new distance measurement . this thesis studies the ultrasonic distance measurement , and reasearchs ultrasonic attenuation in the atmosphere and hydraulic oil , analyses the factors which inflence measurement precision
文中对超声波在空气中、液压油中的衰减情况进行了分析，并对在空气中、液压缸中的影响测量精度的几个因素进行了分析。 |
| 8. | A formula is proposed for calculating the sand content of different size in the case of matching particle size of sand , thus obtaining the correlation between ultrasonic attenuation and density of solid particles in the pulp , as well as particle size
提出了在矿砂粒径尺寸级配情况下的不同粒径时的矿砂含量的公式，并由此得到了超声波衰减与矿浆中固体颗粒浓度、粒度之间的关系。 |
