美国尼尔逊灌溉公司最近正在研制一种可控制流量的扩散喷咀(FCDN)。它综合了可控制流量的喷咀(FCN)(或称可自动调节流量的喷咀)和扩散喷咀(3DN)的优点,而使之合二为一。这样既可以在压力波动较大时自动控制流量的波动,又可以在低压工作时得到较好的水量分布曲线和较小的水滴。这种喷咀主要用于手移式、时针式、滚 Nelson Irrigation Company of the United States is currently developing a flow controllable diffuser (FCDN). Combining the advantages of a flow controllable nozzle (FCN) or a nozzle that can automatically regulate flow and a diffuser nozzle (3DN), it combines the best of both worlds. This can not only control the flow fluctuation automatically when the pressure fluctuates greatly, but also get the better water distribution curve and the smaller water drop when working under low pressure. This nozzle is mainly used for hand-moving, hourglass, roll