葱形拱 ogee arch
形曲线 ogee s
俄亥俄围堰 ohio cofferdam
油浴空气过滤器 oil bath air filter
液压缓冲器 oil buffer
烧油空气加热器 oil fired heater
烧油供热系统 oil fired heating system
油漆 oil paint
油管 oil pipeline
油蚀 oil stain
油井水泥 oil well cement
咬封混凝土楼板 omnia concrete floor
形曲线 ogee s
俄亥俄围堰 ohio cofferdam
油浴空气过滤器 oil bath air filter
液压缓冲器 oil buffer
烧油空气加热器 oil fired heater
烧油供热系统 oil fired heating system
油漆 oil paint
油管 oil pipeline
油蚀 oil stain
油井水泥 oil well cement
咬封混凝土楼板 omnia concrete floor
咬封混凝土板 omnia concrete plank
工地实验室 on job laboratory
双位阀 on off valve
就地连接 on site connection
单柳水系统 once through water supply system
炕 ondol
单心拱 one centered arch
单层粉刷 one coat work
单一性材料 one component material
单自由度系统 one degree system
单户住宅 one family dwelling
小型砌块 one hand block
单铰拱 one hinged arch
专用设计 one off design
临时房屋 one off houses
单道曝气池 one pass aeration tank
单管式循环 one pipe circulation
单管供热系统 one pipe heating system
单管环路系统 one pipe loop system
单管系统 one pipe system
单间住宅 one room dwelling
单间公寓 one roomed flat
单面焊 one side welding
单面连接 one sided connection
单跨度双铰接框架 one span two hinged frame
单层房屋 one storey house
单向配筋板 one way slab
单行道 one way street
单向配筋方式 one way system
单向阀 one way valve