Madaidaicin bututun karfe yana buƙatar amfani da samfur don daidaitawa a cikin tsarin samarwa, wato, man shafawa na gilashi, wanda aka samar da shi da graphite kafin amfani da mai mai gilashin, saboda a lokacin babu irin wannan samfur a kasuwa. Saboda haka, graphite za a iya amfani da shi kawai azaman mai mai, amma ...
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