Ndodo ya graphite ndi chida chofunikira chomwe chimagwiritsidwa ntchito kwambiri pantchito zazitsulo.Chifukwa cha mawonekedwe ake apadera a thupi ndi mankhwala, ndodo za graphite zimagwira ntchito yofunika kwambiri pazitsulo zazitsulo, zomwe zimapereka ubwino wambiri ndi mwayi wogwiritsa ntchito.Choyamba, pulogalamuyi ...
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