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 - violet astronomy紫外天文学ultrahigh-speed particle超高速粒子Ultrasonographic diagnosis超声诊断ultrafine cemented carbide超细硬质合金ultrarelativistic particle超相对论性粒子Ultrahigh-pressure rocks超高压岩石Ultra-light porous metal超轻多孔金属ultramicro-determinationn.超微量测定ultra-supereritical unit超超临界机组ultra-high g penetration高g值过载