Čo je to polovodič a ako sa vyrába?

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<blockquote class="wp-embedded-content" data-secret="Aaue7UsvEB"><a href="https://touchit.sk/co-je-to-polovodic-a-ako-sa-vyraba/348212">Čo je to polovodič a ako sa vyrába?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://touchit.sk/co-je-to-polovodic-a-ako-sa-vyraba/348212/embed#?secret=Aaue7UsvEB" width="600" height="400" title="&#8220;Čo je to polovodič a ako sa vyrába?&#8221; &#8212; TOUCHIT" data-secret="Aaue7UsvEB" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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