refrigerant immersion freezing

refrigerant immersion freezing: Холодильная техника: замораживание погружением в жидкий холодильный агент

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Liquid nitrogen — (liquid density at the triple point is 0.707 g/mL) is the liquid produced industrially in large quantities by fractional distillation of liquid air and is often referred to by the abbreviation, LN2. It is pure nitrogen, in a liquid state. Liquid… … Wikipedia
frozen prepared food — Introduction any of the complete meals or portions of meals that are precooked, assembled into a package, and frozen for retail sale. They are popular among consumers because they provide a diverse menu and are convenient to prepare. A… … Universalium

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