Tungsten yog cov hlau tsis tshua muaj, uas zoo li hlau.Nws tau dhau los ua ib qho ntawm cov khoom siv tseem ceeb tshaj plaws hauv kev lag luam niaj hnub no, kev tiv thaiv hauv teb chaws thiab kev siv thev naus laus zis vim tias nws cov ntsiab lus melting siab, siab hardness, zoo heev corrosion kuj thiab zoo electr ...
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