bebin standard o meyare khasi nadare .
nomreye tar o pood ro ba tajziye peyda mikonan .
masalan 1metr az parche ro 10ta az tar va 10ta az poodesho ke harkodom 1metr hastan ro az oon kharej mokonan va vazn mikonan va az in 10 metr nomreye asli ro ba mohasebat estekhraj mikonan .
vazn kardane kole parche baraye geram dar metr estefade mishe va nemishe az oon nomreye tar o pood ro estekhraj kard.
agaram tar o poodesh yeki bashe baz ham meghdari khata dare o daghigh nist .
behttarrin rahesh hamin kharej kardane tar o pood az parche va vazn kardne jodaganast .
bebakhshid age naghes bood .