Uyu mwaka, wibasiwe n'icyorezo gishya cy'ikamba, itangwa ry'ibikoresho fatizo bya PCB ntirihagije, kandi n'ibiciro by'ibikoresho fatizo nabyo biriyongera.Inganda zijyanye na PCB nazo zagize ingaruka cyane.Kugirango iterambere risanzwe ryumushinga, injeniyeri agomba gutekereza opt ...
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