Txhais li cas ntawm pumice?

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Txhais li cas ntawm pumice?
Txhais li cas ntawm pumice?

Video: Txhais li cas ntawm pumice?

Video: Txhais li cas ntawm pumice?
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Anonim

Pumice, hu ua pumicite nyob rau hauv nws cov hmoov los yog hmoov av daim ntawv, yog ib lub pob zeb volcanic uas muaj vesicular ntxhib textured iav volcanic, uas tej zaum yuav los yog tsis muaj muaju. Nws yog feem ntau lub teeb xim.

Lub ntsiab lus ntawm pumice hauv kev tshawb fawb yog dab tsi?

: a volcanic iav puv cov kab noj hniav thiab qhov ntom ntom uas yog siv tshwj xeeb hauv cov hmoov hmoov rau smoothing thiab polishing.

pob zeb pumice yog dab tsi?

Pumice yog pyroclastic igneous pob zeb uas yog yuav luag tag nrho cov kua thaum lub sij hawm effusion thiab tau txias sai heev uas tsis muaj sij hawm rau nws crystallize. … Thaum nws solidified, cov vapors yaj nyob rau hauv nws mam li nco dheev tso tawm, tag nrho cov o tuaj mus rau hauv ib tug froth uas tam sim ntawd consolidated.

pumice luv teb yog dab tsi?

Pumice yog ib hom extrusive volcanic pob zeb, tsim thaum lava nrog cov ntsiab lus siab ntawm dej thiab roj tawm ntawm lub roob hluav taws. Raws li cov pa npuas khiav, cov lava ua frothy. Thaum cov lava no txias thiab tawv, qhov tshwm sim yog cov khoom siv pob zeb lub teeb heev uas muaj cov npuas me me ntawm cov pa roj.

lo lus jabbering yog dab tsi?

: hais lus nrawm, tsis paub meej, lossis tsis paub meej. transitive verb.: hais sai sai los yog tsis paub meej. jabber.

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