Mumunda wesimbi, nhoroondo yekugadzira yeSilicon carbide crucible inoshandiswa kunyungudutsa simbi dzisina-ferrous inogona kurondwa kumashure kuma1930s. Maitiro ayo akaomarara anosanganisira mbishi kupwanya, batching, ruoko kuruka kana roll kuumba, kuomesa, kupfura, oiri uye hunyoro-proofing. Izvo ...
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