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Nws yog qhov ua tau los hloov barium chloride nrog calcium chloride hauv kev soj ntsuam da dej
1. Kev txiav txim siab ntawm Sodium Hydroxide Raws li lub sijhawm ob hlis, ob qhov kev rov ntsuam xyuas tau mus tib seem thaum tshawb xyuas cov qauv rau cov neeg siv khoom.Qhov kev soj ntsuam ntawm cov qis dua Sodium Hydroxide cov ntsiab lus tau zoo ib yam, thaum qhov sib txawv ntawm cov dej siab sodium siab dua yog w ...Nyeem ntxiv
Xov Xwm Muaj
Nyob zoo, tuaj sab laj nrog peb cov khoom!