ultraismn.激进论；极端主义ultraadj.超；过激的；极端的n.过激论者；急进论者ultra-high-temperature超高温Ultra Low Frequency Jammer超低频干扰器ultra large container ship超大型集装箱船ultracentrifugal stability超离心稳定性ultrasound guided puncture超声引导(导向)穿刺ultrahigh-speed computer超高速巨型计算机ultrathin-film capacitor超薄薄膜电容器ultrafine-grained metals超细晶Ultrasound-guided biopsy超声引导活检ultra-wideband detection超宽带测量