Ngā Pūrongo
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Te Whakamahinga o te Tungsten me te Molybdenum i roto i te Oumu Korehau
He taputapu tino nui ngā oumu korehau i roto i te ahumahi hou. Ka taea e ia te whakatinana i ngā tukanga uaua kāore e taea te whakahaere e ētahi atu taputapu maimoatanga wera, arā, te tinei me te whakamahana korehau, te whakamahana korehau, te otinga totoka korehau me te wā, te whakamahana korehau...Pānuihia atu