单词：convection process
convection process的用法和样例：
例句
- It must be noted, however, that refinery gas usually generates a certain amount of steam in the convection section of refinery gas-fired radiant furnaces.不过必须指出，在燃气热辐射锅炉的对流过程中，炼厂气一般会产生一定数量的蒸汽。
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万物简史