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 velocity target超高速目标ultrasonie linear actuator直线超声电机ultra-low oxygen content超低氧含量ultramicroscopic organisms超显微生物ultralow power consumption超微功耗Ultransound contrast agent超声造影剂ultra low-carbon bainite超低碳贝氏体ultra-high voltage power特高压ultra high strength steels超高强度钢板ultrasonography monitoring超声筛查