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電磁屏蔽 |
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點(diǎn)評(píng)
直男
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點(diǎn)評(píng)
我手機(jī)電梯里有信號(hào)�,�,!
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點(diǎn)評(píng)
高中學(xué)的沒(méi)錯(cuò),,但世界更復(fù)雜,。電磁指的是電場(chǎng)與磁場(chǎng)。事實(shí)上你不可能屏蔽所有電磁場(chǎng)�,,F(xiàn)在屏蔽通訊信號(hào)也只是某一波段,。至于屏蔽噪聲就更復(fù)雜了
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