Boiler is one of the main steam power plants.

锅炉是火力发电的三大主要设备之一。

Where coal is cheap, steam power may be economical.

煤便宜的地方，蒸汽动力就经济。

Condenser system is the main part of steam power device.

冷凝器系统是蒸汽动力装置的主要组成部分。

He experimented in chemistry, in ploughing by steam power.

他做化学实验，实验用蒸汽耕田。

Steamships are large non-military ships driven by steam power.

蒸汽轮船是用蒸汽驱动的非军用轮船。