Txias dov yog ib qho tseem ceeb ntawm cov khoom siv hlau ua tshuab, nws cov keeb kwm kev loj hlob tuaj yeem rov qab mus rau qhov kawg ntawm lub xyoo pua 19th. Cov hauv qab no yog cov theem tseem ceeb hauv keeb kwm ntawm txias dov:
Keeb kwm theem (lig xyoo pua 19th - thaum ntxov xyoo pua 20th): keeb kwm ntawm txias dov tuaj yeem rov qab mus rau lub xyoo pua puv 19. Thaum lub sijhawm ntawd, tib neeg pib sim ua cov hlau nrog cov txheej txheem txias dov kom tau txais cov hlau nyias nyias thiab ntau dua. Cov theem no feem ntau yog thawj theem ntawm kev sim qhov xwm txheej.
Industrialization theem (1920s - 1950s): Nrog rau kev txhim kho txuas ntxiv thiab txhim kho cov txheej txheem txias dov, txias dov tshuab tau maj mam siv rau kev lag luam steel. Los ntawm xyoo 1920 mus txog rau xyoo 1950, cov txheej txheem txias dov tau maj mam ua lag luam thiab dhau los ua qhov txuas tseem ceeb hauv kev tsim cov hlau loj.
Technological kev vam meej theem (1960s - 1990s): los ntawm 1960s mus rau 1990s, nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, cov txheej txheem txias dov tau txuas ntxiv txhim kho thiab ua tiav. Kev taw qhia ntawm cov zeb tshiab thiab cov cuab yeej siv txhim kho kev tsim khoom thiab cov khoom zoo ntawm cov khoom siv txias txias.
Automation thiab digitalization theem (1990s txog tam sim no): Nrog rau kev loj hlob sai ntawm cov ntaub ntawv thev naus laus zis, cov kab txias dov tau maj mam paub txog automation thiab digitalization. Kev taw qhia txog kev tswj hwm lub computer ua rau lub tshuab txias dov ntau lawm yog qhov tseeb, muaj txiaj ntsig thiab ntse.
Txias dov theem ntawm qib high-qib steel (21st caug xyoo): Nrog kev kawm ntawm science thiab technology thiab kev txhim kho txuas ntxiv ntawm cov khoom siv, cov tshuab txias dov tau ua lub luag haujlwm tseem ceeb hauv kev tsim cov hlau qib siab. Niaj hnub nimno txias dov tshuab muaj peev xwm tsim tau ntau yam ntawm cov duab complex thiab high-kev ua tau zoo steel daim hlau kom tau raws li cov kev xav tau ntawm txawv teb.
Feem ntau, cov txheej txheem txias dov tau ntsib txoj kev loj hlob ntev los ntawm nws lub hauv paus chiv keeb mus rau kev hloov tshiab. Nyob rau hauv lub xyoo dhau los, cov txheej txheem txias dov tau txuas ntxiv tsim kho tshiab thiab txhim kho, thiab tau dhau los ua ib qho ntawm cov txheej txheem tseem ceeb hauv kev lag luam steel niaj hnub no.
