ultrasonic flow超声波流量ultrasonicadj.超声波的Ultrasonic - microwave synergistic extraction超声-微波协同萃取Ultrasonic characteristics of thyroid carcinoma甲状腺癌的声像图特征研究Ultrasonic Cleaning Techniques and Applications超声清洗技术及其应用Ultrasonic magnetic abrasive finishing technology超声磁粒复合研磨技术Ultrasonic and microwave co-assisted extraction超声-微波协同萃取ultrasonic echo-impulse digital thickness meter超声回波脉冲数字式测厚仪Ultrasonic Correlation Analysis of Livers'Hardnessultrasonic-magnetorheological compound finishing超声波磁流变复合抛光ultrasonic-electrical spark associated machining超声与电火花联合加工ultrasonically guided percutaneous nephropyelostomy超声引导(导向)经皮肾盂造瘘术