(1) Bayyanar Zamu iya yin hukunci akan wasu matsalolin masu inganci ta hanyar dubawa na gani, kamar ko akwai tabo na mai, tabo mai launi, alamar sawa, ƙwanƙwasa, lahani na layi, lahani, tsalle-tsalle, da sauransu akan saman tawul.(2) Kafaffen gefen kowane tawul dole ne a yi gefuna, wasu tare da gyara ultrasonic...
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