م مقاله کنفرانسی سال ۱۳۸۸ ۲,۱۳۹ مشاهده ARMOURING IN GRADED LOOSED GRAINS RIVER BEDS Armoring in a desert river with a graded loosed grains bed was studied Major sediment parameters involve… non-linear coupled/uncoupledbed armoring.non linear coupled/uncoupled