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Xov Xwm Tuam Txhab

  • Steel Phaj yog dab tsi?

    Steel Phaj yog dab tsi?

    Hlau phaj yog nchuav nrog molten steel, txias thiab nias rau hauv cov hlau tiaj tus.Nws yog tiaj tus, duab plaub thiab tuaj yeem dov ncaj qha lossis txiav los ntawm cov sawb dav hlau.Raws li lub thickness ntawm steel phaj, nyias steel phaj
    Nyeem ntxiv