The spot-market price of steam coal is $133/ton and is likely to rise.
煤炭的市场价是每吨133美元，并且有望上升。
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。
Where coal is cheap, steam power may be economical.
煤便宜的地方，蒸汽动力就经济。
It USES mixture of air and steam to produce coal gas.
采用空气与蒸汽混合气为气化剂，生产发生炉煤气。
It USES mixture of air and steam to produce coal gas.
采用空气与蒸汽混合气为气化剂，生产发生炉煤气。
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