Xaiv qhov Qib Magnet Zoo
Thaum koj ua tiav kev txheeb xyuas cov khoom zoo tshaj plaws rau koj cov hlau nplaum lossis sib nqus sib nqus, cov kauj ruam tom ntej yog txiav txim siab cov hlau nplaum cov qib tshwj xeeb rau koj daim ntawv thov. Rau Neodymium Iron Boron, Samarium Cobalt, thiab ferrite (ceramic) cov ntaub ntawv, g ...
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