The graphite as heater and insulating heatershield in heating vacuum resistance furnace were described.
论述了在高温真空电阻炉中石墨作为加热体和隔热屏的应用，讨论其性能和结构特点。
2
Panasonic Security Systems of Secaucus, New Jersey, has introduced a new weatherproof camera with a built-in fan, heater, and sun shield to maintain operating temperature in harsh environments.