1. Ibiranga umuringa utukura: ubuziranenge bwinshi, gahunda nziza, ibirimo ogisijeni nkeya cyane.ntanumwe Pores, trachoma, porosity, amashanyarazi meza cyane, neza cyane hejuru yubuso bwa electro-etched, nyuma yuburyo bwo gutunganya ubushyuhe, electrode ntabwo iyobora, ibereye f ...
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