A mathematical model of automatic generation control for hydroelectric station is established, and a solution method to AGC mathematical model on multi-nozzle scoop-type turbines is proposed.

建立了水电站厂内自动发电控制的数学模型，提出一种针对多喷嘴水斗式水轮机组的自动发电控制模型求解方法。

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A mathematical model of automatic generation control for hydroelectric station is established, and a solution method to AGC mathematical model on multi-nozzle scoop-type turbines is proposed.

摘要建立了水电站厂内自动发电控制的数学模型，提出一种针对多喷嘴水斗式水轮机组的自动发电控制模型求解方法。

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For the usage of the spade soil opener in a punch planter the precision metering device with declined scoop type disc was selected for maize seeds.

为与铲式成穴器的结构特点相适应，选择倾斜圆盘勺式玉米精密排种器作为打穴播种机的排种机构。

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For the usage of the spade soil opener in a punch planter the precision metering device with declined scoop type disc was selected for maize seeds.

为与铲式成穴器的结构特点相适应，选择倾斜圆盘勺式玉米精密排种器作为打穴播种机的排种机构。

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