四、水量分布的推算及其均匀性通常在洒水范围内方格状或放射状布置大量的量雨筒,测定筒内承接水量,依此可以掌握地表上的水量分布,但是假若能得到水滴粒径和其对应水量的关系,完全不必由许多量雨筒来测定,由水滴飞行轨迹得到水滴落下的平面图形,和不同水滴粒径的水量 Fourth, the calculation of water distribution and its uniformity Usually in the sprinkling range of grid or radial arrangement of a large amount of rain tube, measuring the volume of water received in the tube, which can grasp the surface water distribution, but if you can get the water droplet size And its corresponding relationship between the amount of water, do not have to be measured by a number of rain tube, drip trajectory obtained by dropping the plane graphics, and water droplets of different sizes