Txiv laum huab xeeb yog dav noj hauv tsev thiab txawv teb chaws nrog loj ntau lawm thiab muag.Tsis ntev los no, raws li kev lag luam xav tau thiab los ntawm kev xa mus rau cov thev naus laus zis hauv tsev thiab txawv teb chaws, peb tau ua kom zoo dua cov tshuab colloid, cov khoom siv tseem ceeb ntawm cov txiv laum huab xeeb cov kab ntau lawm, ...
Nyeem ntxiv