为了节约能源，提高加热炉的热效率是一项重要的措施。
To save energy raising heat efficiency of furnace is an important measure.
为了提高换热效率采用直接接触换热。
To improve the efficiency of heat transfer, the system adopts direct contact heat exchange.
为了提高换热效率采用直接接触换热。
To improve the efficiency of heat transfer, the system adopts direct contact heat exchange.
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