Drainage

Deep inside a Sydney drain in New South Wales, Australia

Remains of a drain at Lothal circa 3000 BC

Tank Stream, a historical drain in the City of Sydney

A plastic (PVC) flexible drainage pipe, used to drain water from the roof of a residential house or building

Drainage is the natural or artificial removal of surface and sub-surface water from an area. Many agricultural soils need drainage to improve production or to manage water supplies.

单词	Surface Drain
释义	Surface Drain 英语百科 Drainage Drainage is the natural or artificial removal of surface and sub-surface water from an area. Many agricultural soils need drainage to improve production or to manage water supplies.
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Surface Drain

Drainage