Mipope yachitsulo yowongoka yachitsulo iyenera kugwiritsa ntchito mankhwala kuti agwirizane ndi kupanga, ndiko kuti, mafuta a galasi, omwe amapangidwa ndi graphite asanagwiritse ntchito mafuta a galasi, chifukwa panthawiyo kunalibe mankhwala otere pamsika. Chifukwa chake, graphite itha kugwiritsidwa ntchito ngati mafuta, koma ...
Werengani zambiri