000  $anz n  2
000  $a주제어
001  $aKSH1998021010
005  $a19990621155610
008  $a980429 n azknnaabn          |a a|a    | 
150  $a내화 금속[耐火金屬]
450  $a난융 금속[難融金屬]
450  $wr$i영어$arefractory metal
550  $wg$a금속[金屬]
550  $wh$a니오브[niobium]
550  $wh$a레늄[rhenium]
550  $wh$a몰리브덴[molybdenum]
550  $wh$a오스뮴[osmium]
550  $wh$a이리듐[iridium]
550  $wh$a탄탈[tantalum]
550  $wh$a텅스텐[tungsten]
550  $wh$a티탄(티타늄)[titanium]
550  $wh$a하프늄[hafnium]
550  $a금(금속)[金]
550  $a내열 합금[耐熱合金]
550  $a내화 금속 합금[耐火金屬合金]
550  $a내화재[耐火材]
550  $a바나듐[vanadium]
550  $a크롬[chromium]