Ma ke ʻano he ʻano mea kalapona, hiki ke hoʻopili ʻia ka pauka graphite ma kahi kokoke i nā māla me ka hoʻomau mau ʻana o ka ʻenehana hana. No ka laʻana, hiki ke hoʻohana ʻia e like me nā mea refractory, me nā brick refractory, crucibles, ka pauka hoʻolei mau ʻana, nā cores mold, nā detergents mold a me nā t ...
Heluhelu hou aku