Rau cov hlau nplaum, lawv tus cwj pwm cuam tshuam los ntawm kev hloov pauv ntawm qhov kub thiab txias. Cia peb tshawb xyuas seb cov hlau nplaum sib txawv li cas, xws li cov hlau nplaum neodymium, cov hlau nplaum ferrite, thiab cov hlau nplaum hloov tau yooj yim, hnov mob thaum lawv txias. Neodymium hlau nplaum yog paub rau lawv cov hlau nplaum muaj zog ...
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