Dab tsi yog qhov nyhav ntawm cov tsis-ntaub npuag

Qhov nyhav ntawm cov tsis-ntaub npuag yog hais txog qhov hnyav ntawm ib lub xov xwm tsis-cov ntaub. Feem ntau, qhov nyhav ntawm cov tsis-yog ntaub yog suav los ntawm cov lej ntawm ib grams ntawm ib square. Nws muaj qee yam kev sib raug zoo nrog cov tuab tab sis tsis tau txiav txim siab, piv txwv li. 80 gram ntawm cov xov uas tsis-siv tau los ua ntau yam ntawm cov khoom siv tsis tuab thiab qhov kub-sib dhos cov qhov loj kuj tseem muaj feem xyuam