heaters

1.Sales of electric heaters have increased.

电暖器的销售量。

2.Gasfired heaters should not be used in corrosive or explosive atmosphere.

燃烧煤气的热器不宜用于有腐蚀性或危险性的气体中。

3.The cooker,heaters and other electrical installations are all in perfect working order.

房、热器以及其他电器都处于完好的工作状态。

4.Boiler's appurtenance: burners which will be suitable for the fuels of the boilers, water treatment devices, pumps, blowers, de-oxygenization devices, heaters, safety devices, water gages;

3配套炉燃用何种燃料的燃烧器、水处理、泵、风机、除氧器、热器、安全阀、水位计等；