煤便宜的地方，蒸汽动力就经济。

Where coal is cheap, steam power may be economical.

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目前，煤是蒸汽动力厂的最常用的能源。

At present coal is the most common food of a steam plant.

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冷凝器系统是蒸汽动力装置的主要组成部分。

Condenser system is the main part of steam power device.

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什么轮船首先以蒸汽为动力？

Which was the first ship to be powered by steam?

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蒸汽机将热能转变成动力。

A steam engine transforms heat into power.

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用蒸汽驱动的动力铲。

A power shovel that is driven by steam.

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蒸汽机把热转化成动力。

A steam engineer transforms heat into power.

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蒸汽机把热转化成动力。

A steam engineer transforms heat into power.

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