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. 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。
3. 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。
4. pipelining of heated oil 
   油品加热输送
5. A heated debate ensued. 
   接着是一场激烈的辩论。

查看更多例句 相关情景会话

• 1. 直热式的，直接加热的
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• 2. 直热式
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