放水阀的进水管可接一根长塑料管，并与水源接通，可用来开穴与浇水。
A water inlet pipe of the water discharge valve can be connected with a long plastic pipe and a water source for opening cavities and watering.
放水阀的进水管可接一根长塑料管，并与水源接通，可用来开穴与浇水。
A water inlet pipe of the water discharge valve can be connected with a long plastic pipe and a water source for opening cavities and watering.
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