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Aug 03, 2020Cia peb tham txog cov khoom siv ntawm cov hlau nplaum, feem ntau yog ferrite ...Cia peb tham txog cov khoom siv ntawm cov hlau nplaum, feem ntau yog ferrite (dub), neodymium hlau boron (nyiaj dawb), strontium hlau nplaum. -
Aug 03, 2020Me ntsis kev paub ntawm kev tso chaw hais lusMe ntsis kev paub ntawm kev tso chaw hais lus -
Aug 03, 2020Qhov zoo thiab qhov tsis zoo ntawm ntau yam lus ntuav cov khoom sivQhov zoo thiab qhov tsis zoo ntawm ntau yam lus ntuav cov khoom siv -
Jul 03, 2020Tham txog dab tsi yog damper ntawm cov lus haisTham txog dab tsi yog damper ntawm cov lus hais
