UNEPabbr.United Nations Environment Programme 联合国环境规划署
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
unmoderated list不受制约的列表
unconfined blast敞口吹风
unbalanced valve不平衡的阀
unthreading mode退带状态
uncombined films游离涂膜
unfavourablenessn.不适宜
unguided vehicle非制导火箭
uncharted island[法] 海图上未载明的岛屿
unearned premiumn.预收的保险费