In big cities (especially Beijing, in preparation for the Olympics), coal-fired heating and power plants are having to be modified to run on natural gas.
在大城市(尤其是北京，为奥运会做准备)，烧煤供热和电厂正被改造使用天然气。
It is the high incidence season of non-occupational carbon monoxide poisoning due to coal fired heating.
因燃煤取暖导致的非职业性一氧化碳中毒事件正处于高发时段。
It results in the schematics of the theoretical solar chemical pump system and the coal-fired heating system, as well as the cost comparison chart of two systems under the same conditions.
结果给出太阳能化学热泵理论系统和燃煤供热系统原理图和在相同条件下供热时两种系统经济支出的对比图。
Standard switch entirely suitable for millivolt service on self-energized control circuits of gas fired heating installations.
在燃气加热安装系统的自激控制电路中，整个标准开关适用于毫伏电压。
Standard switch entirely suitable for millivolt service on self-energized control circuits of gas fired heating installations.
在燃气加热安装系统的自激控制电路中，整个标准开关适用于毫伏电压。
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