پول آپ و پول داوون

 

http://mecha.ir/2019/02/%d9%85%d8%ad%d8%a7%d8%b3%d8%a8%d9%87-%d9%85%d9%82%d8%a7%d9%88%d9%85%d8%aa-%d9%be%d9%88%d9%84-%d8%a2%d9%be-%d9%88-%d9%be%d9%88%d9%84-%d8%af%d8%a7%d9%88%d9%88%d9%86/