UNCAC反腐败公约UNabbr.(=United Nations) 联合国pron.<口>人，事物，家伙，东西unemployment insurance system失业保险制度unbalance of revolving object转子不平衡量unfailing devotion/support一贯的忠诚/支持Unconventional Stellar Aspect非常规恒星特征undeeimated wavelet transform非抽样小波变换un-marriage sexual behavior非婚性行为unchangeable stiffness system等刚度undisturbed marine silty soil原状海洋粉土uncontaminated operating room洁净手术室undeclared prescription drugs非法添加化学药品