Question

sort note on hydruli c. structure of ancient times

Answer 1

A hydraulic structure is a structure submerged or partially submerged in a body of water, which disrupts the natural body of water. They can be used to divert,disruptor completely stop the flow.
An example for the hydraulic structure is a dam,w which slows the normal flow rate of the river in order to power turbines. An hydraulic structure can be built in rivers,or sea ,or any body of water where there is a need for Change in the natural flow of water