预热

• Speedy warm up time of 30 seconds
  预热时间最快只需30秒
• Start temperature preheating temperature
  开始预热温度
• Practice for preheating manganese ore and hot charging and its application
  锰矿预热和热装工艺及其应用实践
• Testing methods for air preheaters
  空气预热器试验方法
• Fluorescent lamps , non preheated for potentially explosive atmospheres
  在易爆环境中用的非起动预热的荧光灯
• Prevention and disposal of rotary air pre - heater secondary combustion
  回转式空气预热器二次燃烧的预防与处理
• Preheat oven to 350f . line 24 muffin cups with paper liners
  烤箱预热到175摄氏度。在模子里放24个松饼纸杯。