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Keyword [Calculation analysis]
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1. Coefficient And Threshold Calculation Analysis Of Gansu Agricultural Irrigation Water Use
2. The Design And Research On The4U-1000Potato Harvester
3. Calculation And Analysis Of Effective Utilization Coefficient Of Farmland Irrigation Water In Shandong Province
4. Coefficient And Trend Calculation Analysis Of Irrigation Water Use In Qamdo,Tibet
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