Ngemuva kokuthi i-graphite enwebekayo iphathwe ngokushesha ekushiseni okuphezulu, isikali siba njenge-worm, futhi umthamo ungakhula izikhathi ezingu-100-400. Le graphite eyandisiwe isagcina izakhiwo zegraphite yemvelo, inokunwebeka okuhle, ayikhululekile futhi inezimbotshana, futhi imelana ne-temperatu...
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