Injet muab cov txheej txheem ua tiav ntawm cov txheej txheem kev siv hluav taws xob siab tshaj plaws rau kev lag luam hlau thiab hlau metallurgy, muab cov khoom siv hluav taws xob zoo, huv si thiab cov khoom siv hluav taws xob zoo thiab cov kev pabcuam rau ntau cov hlau thiab hlau loj heev, thiab pab txhawb rau kev hloov pauv, kho dua tshiab thiab txhim kho kev lag luam hlau thiab hlau metallurgy.