(🥈)事实证(zhèng )明,该(gāi )方案(🦍)调整后(🥧),渠线长(zhǎng )度缩减,灌溉面积增大,灌溉(gà(♓)i )流速增加,还节(jiē )约投资113万(wàn )元。较原设计U型方案,输水长度缩(🌾)短6.75公(gōng )里,灌溉放水时(shí )间也减少2.54个小时。[展开全部]
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