Tus kheej ntse -}}}}}}}}}}}}}}}}} Cov khoom lag luam khoom siv tshiab thiab cov kev pabcuam ua haujlwm tshiab, cov qauv tshiab thiab cov qauv tshiab. Piv nrog tsoosad cov kev pab cuam, tus kheej-}} Pab cov tshuab luam ntawv muaj ntau yam zoo. Kev tshawb fawb ntawm kev pabcuam tsim qauv ntawm cov khoom lag luam tshiab no thiab qauv muaj qee yam theoretical thiab kev ua tau zoo. Los ntawm theoretical taw tes ntawm saib, cov kev tsim qauv cov kev pabcuam yuav tsum tau sib xyaw ua ke nrog kev xyaum tshaj plaws, thiab siv tau hauv kev tshawb fawb ua ke ntawm theoretical kev tshawb fawb thiab kev txhim kho siv tau.
Nyob rau hauv txhua theem ntawm kev tshwm sim thiab kev txhim kho cov qauv tshiab, kom muaj cov teeb meem tshiab, txhim kho nws cov teeb meem txawv, thiab thaum kawg pab cov neeg siv khoom
