http://dmpogo.livejournal.com/ ([identity profile] dmpogo.livejournal.com) wrote in [personal profile] green_fr 2021-02-17 08:43 am (UTC)

Простейшая проверка — зажечь свечу после того как закрыт стакан. Какое-нибудь пьезо элемент вставить.
(34 comments)

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