Umuyoboro w'icyuma
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304 ibyuma bidafite ingese bidafite isuderi ya karubone acoustic ibyuma
Umuyoboro udafite ibyuma bidafite umuyaga birwanya umwuka, umwuka, amazi nizindi ntege nke zangirika ziciriritse na aside, alkali, umunyu nizindi miti yangiza imiti yangirika yumuyoboro wibyuma, urukuta runini cyane, rufite ubukungu kandi bufatika, uko ubunini bwurukuta ruzagenda rwiyongera, igiciro cyacyo cyo gutunganya kizazamuka cyane. Mu kunama, imbaraga za torsional nimwe, uburemere bworoshye, bityo rero ikoreshwa cyane mugukora ibice byubukanishi nubwubatsi.