UNCF=United Nations Children's Fund 联合国儿童基金
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
uncountable model不可数模型
unclosed traverse不闭合导线
unbuilt detergent未复配洗涤剂
Uncaria laevigatan.平滑钩藤
unbreakable glass不碎玻璃
unbalanced growth不平衡生长,非平衡增长
Uncaria alkaloids钩藤碱
uncharged polymer非荷电聚合物
unfavorable omens坏兆头
unpolar induction单极感应