Probably the most widely used medium is a high-boiling petroleum fraction, usually in the gas-oil range.

最广泛使用的介质可能一般采用瓦斯油沸程内的高沸点石油馏分。

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Probably the most widely used medium is a high-boiling petroleum fraction, usually in the gas-oil range.

最广泛使用的介质可能一般采用瓦斯油沸程内的高沸点石油馏分。

youdao