| 摘要 |
A spray and drip irrigation device connectable to a low volume irrigation tube comprises a lower member connected to the irrigation tube and formed with an exterior thread along a part of its outer surface along which an upper member threadedly moves to selectively cover an outlet orifice in the lower member to control the type of water flow from the device. A brim formed in the upper member cooperates with the outlet orifice in the lower member to enable the device to operate in drip, spray, and squirt modes.
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