Dab tsi ntawm cov hlau yog nyiam rau Neodymium Magnets?
Peb txhua tus paub tias cov hlau nplaum nyiam ib leeg ntawm cov ncej sab nraud thiab tawm tsam zoo li cov ncej. Tab sis raws nraim hom hlau uas lawv nyiam? Neodymium hlau nplaum yog lub npe hu ua cov khoom siv hlau nplaum muaj zog tshaj plaws thiab muaj lub zog tuav siab tshaj plaws rau cov hlau no ...
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