Menyekanisha: Mwisi yisi igenda itera imbere yikoranabuhanga, imbaho zicapye zicapye (PCBs) nizo nkingi yibikoresho bya elegitoroniki bitabarika. Mu myaka yashize, icyifuzo cya PCBs ntoya, yihuse, kandi ikora neza cyiyongereye, bituma ubushakashatsi niterambere byiyongera (R&D) no guhanga udushya i ...
Soma byinshi