生长在弗罗里达南部和古巴的小而低矮结实的扇形棕榈。
直管排污管的排污阻力小,旋 流喷嘴、扇形喷嘴的冲洗面积大、水压高、用水量小。
The straight blow-off pipe has less blow-off resistance, the flushing area of the swirl nozzles and the fan nozzles is large, the water pressure is high, and the water consumption is less.
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