| 摘要 |
An underground water discharging and irrigation sprinkler including an elongated housing having a riser tube slidably mounted therein, a water motor being mounted adjacent the lowermost end of the riser tube and a discharge nozzle being provided adjacent the other end thereof, and water inlet means connected with the housing for selectively raising the riser tube within the housing to elevate the nozzle thereof above the ground and lowering the riser tube within the housing to retract the nozzle belowground.
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