Qhov tseeb, 70 grams thiab 80 grams uas tau hais ntawm no yog hais txog ib daim ntaub tsis-ntaub rau ib square meter, thiab nws qhov hnyav yog 70 grams lossis 80 grams.
Yog li ntawd, lawv cov kev sib txawv yog pom tau yooj yim: hauv tib qho xwm txheej, cov ntaub hnyav dua, nws cov khoom zoo dua (xws li muaj peev xwm tiv qhov hnyav), qhov no yog lawv qhov sib txawv.
Txawm li cas los xij, qhov no txhais tau tias 80 gram ntawm cov ntaub yog twv yuav raug hu ntau dua 70 grams ntawm cov ntaub, tom qab tag nrho, tus nqi yog siab dua
