Most field sprinklers use a rotating sprinkler head of the general type.
大部分田间喷灌采用通用的旋转式喷头。
In recent years a lot of papers about technique for measuring a 3-d low turbulent flow field by means of rotating a X-type hot-wire probe has been published.
近年来用X型热线探头旋转法测量低湍流度的三维流场的报导较多，但是对它的使用范围以及测量精度论及的很少。
In recent years a lot of papers about technique for measuring a 3-d low turbulent flow field by means of rotating a X-type hot-wire probe has been published.
近年来用X型热线探头旋转法测量低湍流度的三维流场的报导较多，但是对它的使用范围以及测量精度论及的很少。
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