Safety of domestic gas appliances - specification for combined appliances : fanned - circulation ducted - air heaters circulators 家用燃气设备安全性.第9部分:组合式器具:风扇循环抽气热水器循环器规范
Device : dust collector , dust drawer , air heater , wash tower , draught fan , blower : import and export fans of different equipments . 集尘器汲尘器空气加热器洗涤塔引风机鼓风机：各设备的风机进出口。
Non - domestic direct gas - fired forced convection air heaters for space heating not exceeding a net heat input of 300 kw ; german version en 525 : 1997 额定热负载不超过300kv非家用直接烧燃气的强制对流室
Domestic gas - fired forced convection air heaters for space heating , with fan - assisted burners not exceeding ? net heat input of 70 kw 家用燃气强制对流热风取暖器.装有净热输入在70kw以下的低压鼓风燃烧器
2 3 . installation and maintenance of gas - fired ducted air heaters of rated input not exceeding 70 kw net 2nd and 3rd family gases - specification 额定输入净值不超过70kw的燃气管道式空气加热器的安装和维修
Domestic gas - fired forced convection air heaters for space heating , with fan - assisted burners not exceeding a net heat input of 70 kw 装有净加热输入量不超过70kw风扇辅助锅炉的家用空间加热燃气强制对流空气加热器
Specification for dedicated liquefied petroleum gas appliances - mobile and portable non - domestic forced convection direct fired air heaters 专用液化石油气设施的规范.移动和便携式非家用强制对流直燃式气体加热器
There are two methods to development plateau oil - fired warm air heater . one is experimentation ; the other is numerical simulation 对高原燃油暖风机的研究可以通过实验方法来完成，也可以通过数值模拟的方法实现。
Domestic gas - fired forced convection air heaters for space heating , with fan - assisted burners not exceeding a net heat input of 70 kw 净热输入值不超过70kw的借助风扇的锅炉的空间供暖用的家用燃气强制对流空气加热器
Domestic gas - fired forced convection air heaters for space heating with fan - assisted burners not exceeding a net heat input of 70 kw 带有净输入热量不超过70kw风扇辅助燃烧器的空间供暖用的家用燃气强制对流空气加热器
