Daim ntawv thov ntawm cov khoom siv tau hluav taws xob sib chwv sib zog
Cov hlau nplaum pabcuam hluav taws xob tiv thaiv lub ntsuas cua yog qhov ntsuas cov khoom siv hauv roj av, tshuaj, metallurgical, chaw nres tsheb fais fab thiab lwm cov tuam txhab kev lag luam lossis hauv kev txhawb nqa cov tshuab kho tshuab thiab hluav taws xob los ntsuas lub siab ntawm ntau cov kua tshaj tawm yam tsis muaj kev phom sij tawg. Feem ntau, cov khoom siv sib nqus sib nqus hluav taws xob sib txuas nrog cov ntsuas hluav taws xob tuaj yeem siv nrog cov khoom siv hluav taws xob sib txuas (xws li cov xa tawm thiab cov sib tiv tauj) kom ua tiav lub hom phiaj ntawm kev tswj tsis siv neeg thiab cov paib (lub tswb) rau cov kev ntsuas siab nyob hauv kuaj (tswj).
