Member for
4 ปี 3 เดือนAge: 16+
Level: 11
Language: Hungarian
(hu)
ไอดี: 1851067
06/02/2022
Country code: HU
Country: Hungary
Main content: Hullámok (1945899)
From worksheet author:
A hullámok alapjelenségei
Other contents:
rezgés, interferencia, állóhullám
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