Совершенствование сжигания газа и мазута в топках котлов и снижение вредностей в продуктах сгорания

Совершенствование сжигания газа и мазута в топках котлов и снижение вредностей в продуктах сгорания

2016 · 1.53 MB · Russian
by Сборник Н.Т.    
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“ Never wish them pain. That's not who you are. If they caused you pain, they must have pain inside. Wish them healing. ” ― Najwa Zebian
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