A land irrigation system is illustrated in which an elongated sprinkler line continuously travels in a direction transverse to its length along the length dimension of a stationary water main and is continuously supplied with water from {HEAD ~ upstanding hydrants} spaced along {TAIL ~ the length} of the water main 
spaced along
A land irrigation system is illustrated in which an elongated sprinkler line continuously travels in a direction transverse to its length along the length dimension of a stationary water main and is continuously supplied with water from { HEAD ~ upstanding hydrants } spaced along { TAIL ~ the length } of the water main
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