然后提出了田面微地形产生的流量偏差率公式，并用泰勒级数展开；
The calculation formula of the flow deviation rate of the emitter, which was from the farmland micro-terrain, was proposed and developed by the formula of Tailor.
然后提出了田面微地形产生的流量偏差率公式，并用泰勒级数展开；
The calculation formula of the flow deviation rate of the emitter, which was from the farmland micro-terrain, was proposed and developed by the formula of Tailor.
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