Kub Muag

Peb yog cov khoom lag luam zoo ntawm cov khoom siv raw thiab cov txheej txheem ntawm tungsten, molybdenum, tantalum, thiab niobium refractory. Peb cov khoom lag luam tseem muaj cov tshuab nqus tsev, cua sov kub, photovoltaic, semiconductors, thiab lwm yam lag luam. Peb zoo siab los pab cov neeg siv khoom muaj teeb meem, thov hu rau peb tam sim ntawd.