Magnetism Unlimited! Yuav ua li cas Neodymium-Iron-Boron Magnets Reshaping Cov Me Nyuam Cov Khoom Ua Si Kev Lag Luam
NdFeB hlau nplaum, raws li kev ua haujlwm siab ruaj khov khoom siv hlau nplaum tsim txij li xyoo 1980s, ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam high-tech vim lawv cov khoom siv hluav taws xob sib nqus ultra-siab, zoo heev ...
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