かっせーかエネネギーの図です(一応
http://www.daiwa-can.co.jp/energy/info/column_09.html https://don.neso.tech/media/qSVsKk--zlHj6TvJJJ4
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!
