1. A partly enclosed, directly heated surface from which warm air circulates by convection. 
   对流式加热机一个部分被封闭，暖空气在其直接加热的表面上通过对流进行循环的装置
2. A microwave tube in which electrons generated from a heated cathode are affected by magnetic and electric fields in such a way as to produce microwave radiation used in radar and in microwave ovens. 
   磁控管一种微波管，它里面的发热阴极发出的电子受到磁场和电场的影响，从而产生能用于雷达和微波炉微波辐射
3. The liquid directly above the heat source will be heated, reducing its density and causing it to rise. 
   热源上的流体将直接被加热，这样会使其密度减小，导致其向上隆升。
4. The amount of material directly heated by contact with the hot spot is very small, but the heat transmitted can apparently be quite great. 
   通过与热点接触被直接加热的物质是很少的，但是被传送的热量显然却相当大。
5. cathode for vacuum electronic device 
   真空电子器件阴极

查看更多例句 相关情景会话

• 1. 直热式阴极
  direction of propagation 传播方向...directly heated cathode 直热式阴极...discharge 放电
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• 2. 直接加热式阴极
  directly gripping 直接夹持...directly heated cathode 直接加热式阴极...directly heated cathode 直热式阴极
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