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сырьё С4, исходное сырьё бутадиен, сырьё бутадиен
强调
一般
crude C4
(Also known as butadiene feed or crude butadie ne – is a colourless gas (liquid under pressure) with a mild petroleum-like odour. It is an important petrochemical feedstock.
Спиридонов Н.В.
)
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