Various fuels such as coal, gas, oil and food are common examples of chemical energy.
最常见的化学能包括煤、天然气、石油、和食物等各种各样的燃料。
At present coal is the most common food of a steam plant.
目前，煤是蒸汽动力厂的最常用的能源。
Variouss fuels such as coal, gas, oil and food are common examples of chemical energy.
最常见的化学能包括煤、天然气、石油、和食物等各种各样的燃料。
The most common of these are wood, coal, lignite, and coconut shell.
其中最常见的有木材，煤，褐煤，椰子壳。
Electricity is the common energy made mainly form coal.
电力是能源主要形成煤。
The sliding phenomenon between coal seam and its roof or floor is very common.
煤层及其顶底板中滑动现象极为普遍。
The sliding phenomenon between coal seam and its roof or floor is very common.
煤层及其顶底板中滑动现象极为普遍。
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