Diatomite av nkos rau diatomite ua cov khoom siv tseem ceeb, ntxiv ntau yam tshuaj ntxiv hmoov zoo nkauj txheej, hmoov ntim, tsis yog kua thoob. Diatomaceous ntiaj teb, ib leeg-celled dej plankton uas nyob ib lab xyoo dhau los, yog cov sediment ntawm diatoms, uas, thaum ...
Nyeem ntxiv