1、

The amount of carbon dioxide released by human activities such as burning coal and oil is small in comparison.

相比之下,人类活动燃烧煤、石油等所释放的二氧化碳要少一些。

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2、

Polycyclic aromatic hydrocarbons ( PAHs), a kind of POPs are ubiquitous in air, contributing more than 1/ 3 of the total carcinogenic chemicals, with the source of oil-leak, traffic emissions, environmental tobacco smoke, fuel-burning, cooking oil-fumes, and, so on.

多环芳烃(PAHs)是大气中广泛存在的一类持久性有机污染物,占自然界中致癌物质总量1/3以上,主要来源有石油泄漏、汽车尾气、环境烟草烟雾、燃料燃烧及烹调油烟等。

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3、

Because of the high cost of burning heavy oil in tunnel kiln, the coke tar pitch is used instead of heavy oil.

隧道窑由于燃用重油造成生产成本升高,为此探讨采用煤焦油沥青配制的燃料油替代重油燃烧。

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4、

The rebuild method for boiler body, burning system, oil burning system, chemic water treatment system, circular water system, electricity generated and transported system, coal transported system, dust eliminated system and electric system have been given out.

给出了锅炉本体、燃烧系统、燃油系统、化学水处理系统、循环水系统、发送电系统、输煤系统、除灰系统、电气系统的具体改造方案;

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