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Tuubbada garaafiga ah ee qiimaha jaban, dia weyn ee porosity hooseeya...
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Usha Kaarboon Electrode Usha Garaafka Iibka
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Tuubada garaafka dahaarka dusha sare, garaaf cabbir yar...
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Maaddada garaafiga ee cufnaanta sare leh...
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Usha Silikoon oo tayo sare leh, Usha Sic ee farsamaynta
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tuubada garaafka kaarboonka ee xoogga badan, cufnaanta sare...