مباحث درس ماشین های کشاورزی عمومی

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مباحث درس ماشین های کشاورزی عمومی

منبع

 

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introduction

 

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moldboard plow

 

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plow principle

 

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plow draft & power

 

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disk plow

 

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chisel subsoiler

 

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rotary tilller

 

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bedder

 

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secondary

 

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tooh type

 

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especial tools

 

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planting