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762,487 results
Pure silicon has very low conductivity. This tutorial explains how "doping," the addition of very small amounts of elements like P ...
138,494 views
9 years ago
Wie weit gehen sie für breite Schultern und Sixpack? Etwa 200'000 Menschen in der Schweiz greifen zu Anabolika. Gerade für ...
42,985 views
5 days ago