workshop 工场
wrench 扳手；扳钳
write-off 划销；撇帐
X-ray X射线；X光
X-ray examination/inspection X射线检查
yield strength 屈服强度
yield stress 屈服应力
zebra crossing 斑马线过路处
zinc paint 锌漆
zinc pipe 锌管
zinc plating 镀锌
zoning plan 分区图
U bolt 马蹄螺栓
U turn 掉头
U turn slip road 掉头支路
ultimate bearing capacity 极限承载力
ultimate bearing failure 极限承载损坏
ultimate limit state design 极限状态设计
ultimate load 极限载重；极限荷载
ultimate strength 极限强度
ultimate stress 极限应力