Make sure that all gas fires and central heating boilers are serviced annually.
确保所有的煤气取暖炉和中央供暖锅炉每年都检修一次。
Central heating boilers other than those of heading No. 84.02.
集中供暖用的热水锅炉，但税目84.02的货品除外。
Direct burning of Natural gas in heating boilers is being discussed.
对供热锅炉直接燃烧天然气的情况进行了讨论。
The coal burning heating boilers used on present passenger cars are rebuilt.
对目前客车用燃煤采暖锅炉进行了改造。
Heating boilers. part 3: gas - fired central heating boilers. assembly comprising a boiler and a forced draught burner.
供暖锅炉。第3部分：燃烧气体的集中供暖锅炉。锅炉和强制送风燃烧器组合设备。
Heating boilers. part 1: heating boilers with forced draught burners. terminology, general requirements, testing and marking.
供暖锅炉。第1部分：带强制送风燃烧器的供暖锅炉。术语一般要求试验和标记。
Electric heating boilers enjoy the following merits: no noise, no pollution, advanced technology, simple fabrication, compact construction, safe and high efficiency operation, etc.
电热锅炉具有无噪音，无污染，技术先进，绿色环保，制造简单，结构紧凑及安全高效等特点。
A heat pump system can replace the original heating boilers, refrigeration and air-conditioning and living hot water heating three sets of devices or systems, thereby also increasing the economy.
一套热泵系统可以替换原有的供热锅炉、制冷空调和生活热水加热的三套装置或系统，从而也增加了经济性。
A heat pump system can replace the original heating boilers, refrigeration and air-conditioning and living hot water heating three sets of devices or systems, thereby also increasing the economy.
一套热泵系统可以替换原有的供热锅炉、制冷空调和生活热水加热的三套装置或系统，从而也增加了经济性。
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