defuel operation的用法和样例：
例句
- The control unit regulates the fuel flow to the combustion chamber, during starting and normal operation.
控制组件用来在起动及正常操作期间调节流进燃烧室的燃油量。 - This paper discusses the loading and deformation characters in detail during the dieless cold spinning in single operation to form the vessel end.
本文介绍了大型燃油锅炉经拼板焊接和冷旋压加工制造而成的平管板封头残余应力试验。
