炭画の世界へようこそ!
久しぶりの白煙? 気温が低いと水蒸気がでるが (白煙防止装置は=エネルギーの損失) 燃焼状態は?
Posted on 1 月 6th, 2014 under 大自然流の世界 • RSS 2.0 feed • Both comments and pings are currently closed
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