Diatomite yog dab tsi?
Diatomaceous ntiaj teb, feem ntau hu ua roob hmoov, fossil hmoov los yog radiolaria hmoov, yog ib tug biogenic siliceous sedimentary pob zeb, feem ntau yog tsim los ntawm siliceous seem ntawm diatoms thiab lwm yam kab mob. Muaj ntau yam lus Askiv, uas ...
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