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1.
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灌溉地区,包括灌溉渠道和水田.
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2.
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作者通过圣维南方程组的有限差分数值解并使用比例控制方式,编写出计算机程序,实现了自动上游控制灌溉渠道系统的计算机模拟。
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3.
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至清初,宁夏平原的灌溉渠道渐趋完善,其分布密如蛛网。
※ "灌溉渠"造句
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怎祝网汉语词典查词提供。