Recent questions tagged vacuum

0 answers
201 views
asked Nov 14, 2021 by Asklent102021 (11.9k points)
1 answer
251 views
asked Apr 27, 2021 by asklent042021 (27.6k points)
0 answers
130 views
asked Apr 27, 2021 by asklent042021 (27.6k points)
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