The equipment maintains a constant head of water within the frame, and the volume of water infiltrated is determined by measuring volume of water remaining in the supply barrel.
(The equipment; maintains; a constant head of water) (water; infiltrated; ) (the volume of water; is determined; ) (the volume of water; by measuring; volume of water)
The equipment water the volume of water the volume of water
maintains infiltrated is determined by measuring
a constant head of water
volume of water