Ursan.[天]大熊星座；[天]小熊星座Urn.铀Urate renal clearance尿酸盐肾廓清率uropherine salicylate水杨酸可可碱锂Uranotaenia lutescensn.贫毛蓝带蚊Urumqi water resources乌鲁木齐市水资源uranous-uranic oxide八氧化三铀Uromyces dactylocteniin.龙爪茅单胞锈菌Uromyces sphaerophysae苦马豆单胞锈菌Uranotaenia enigmatican.迷洞蓝带蚊Uranotaenia leiboensisn.雷波蓝带蚊Uranotaenia annandalein.安氏蓝带蚊