dam appurtenance坝体附属结构物
equipment appurtenance设备附件
pipeline appurtenance管道附属构筑物
highway appurtenance公路附属设施
reactor appurtenance反应堆辅助设备
cable appurtenance电缆附属装置
roadside appurtenance路旁公用设施
Plumbing Appurtenance建筑给水排水附件
Appurtenance sewer下水道附属设备
N(名词) a secondary or less significant thing or part 附属物