Unraun.昂劳
UNabbr.(=United Nations) 联合国pron.<口>人,事物,家伙,东西
unmanned lunar exploration support无人探月飞行保障
Unbolt the shaft coupling bolts.拧开联轴器螺栓。
uncontrollable marketing variables不可控销售变数
unconsolidated sandstone reservoir疏松砂岩油藏
Uncontrollably forceful or fast.无法控制的力量或速度的
uncomplicated atrial septal defect未合并其他异常的房间隔缺损
unbalanced cantilever beam casting不平衡悬浇
unbalanced coordinated development非均衡协调发展