off design operation

• 变工况

off design operation的用法和样例：

例句

1. Further, the modeling principles of HRSG on design and off-design points are introduced.
   讨论余热锅炉在设计工况和变工况下相关部件的建模。
2. According to the new varying operation conditions theory, it introduces a new type and exact method to calculate the exhaust steam enthalpy.
   根据此变工况理论，给出了计算排汽焓的新型准确的方法。