coal oil

基本解释

The adjuvant is coal oil, light diesel oil or capryl alcohol.
所述的辅助药剂为煤油或轻柴油或仲辛醇。
The test results indicated that the use of coal oil mixture in diesel engines is possible and seems satisfactory.
试验结果证明在该机上燃用煤油浆是可行的，其工作情况良好。
The article briefly introduced the present situation of process technology, commercial operation of liquefied coal oil at home and abroad.
介绍了国内外煤炭液化制油的工艺技术及商业化运作情况，并对我国发展煤液化油提出一些建议。

Greenhouse gas emissions, such as carbon dioxide, are created in part by burning oil and coal for transportation and electricity.
Automobiles create it. Any device that burns fuels like coal,gasoline,kerosene, oil or wood will produce carbon monoxide.
Any device that burns fuels such as coal,oil or wood can create the gas.

It produces less carbon dioxide for a unit of energy than coal or oil, so the climate will benefit to the degree that gas replaces either of those: it will mostly substitute for coal, though some oil too, especially if gas-powered trucking becomes widespread.
ECONOMIST: Natural gas