埋地排水管
underground drainage pipe
non pressure drainage and sewerage pipe
underearth drainage pipe
塑料埋地排水管
plastic underground drainpipe
underground drainage plastics pipes
non pressure drainage and sewerage plastics pipe
给水排水管道
feed water and drainage pipeline
feed water and drain pipeline
场地排水
drainage of construction site
抽水地面沉降
land subsidence caused by pumping
单位地面面积散热量
heat release per unit floor area
低温热水地面辐射采暖系统
low-temperature hot-water floor-radiation heating
低温热水地面辐射供暖
low temperature-hot water radiative heating system