Finally, the refining and burning of petroleum and its products can cause air pollution.

最后，石油及其产品的提炼和燃烧过程会造成空气污染。

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A mathematical model of heat loss of high temperature smoke vented from rotary anode furnace in copper refining based on warm-up burning air was established based on principle of energy balance.

根据能量平衡原理，建立了基于预热燃烧风富氧下铜精炼阳极炉高温烟气热损失数学模型，并根据富氧燃烧风对铜精炼阳极炉氧化期高温烟气热损失数学模型进行计算。

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Steel and iron manufacturers also extensively use oxygen or oxygen-enriched air to affect chemical refining and heating associated with carbon removal and other oxidation reactions.

钢铁制造商还广泛使用氧或富氧空气来影响同除碳和其它氧化反应相联系的化学精炼和加热。

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Taking this traditional idea of using air friction and refining it to control the speed of automatic winding, Urwerk has replaced the traditional rotating mechanisms of the past with miniature twin turbines that can be seen spinning on the back of the watch and are connected to the rotor.

FORBES: Jackie Chan, Kwon Sang-Woo and Urwerk Star in Chinese Zodiac

Delta Air Lines is getting into the refining business, with the acquisition of a facility south of Philadelphia from ConocoPhillips spinoff Phillips 66.

FORBES: Delta Pulls The Trigger On Purchase Of Philly Refinery From Phillips 66

As the heart of America's petrochemical and oil-refining industries, Texas puts more chemicals into the air than any other state, and by most rankings is the state with the worst toxin level in the atmosphere.

ECONOMIST: The Lone Smog State | The