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参见图1、图2,放置在矩形32区域内的整个喷灌装置30绕轴线34旋转,其旋转圆面积为36,这样,圆面积36和矩形面积32大部分相重合,有小部分边角地喷洒不到。
Referring to Fig. 1 and Fig. 2, the entire sprinkler 30 placed in the area of a rectangle 32 is rotated about an axis 34 with an area 36 of the circle of revolution so that the circular area 36 and the rectangular area 32 are mostly coincident with a small part of the corner Less than