variable operating condition的用法和樣例：
例句
- The results of this pape could be referenced during the period of designing , operating and controlling HRSG.
本文通過(guò)對余熱鍋爐優(yōu)化計算與變工況分析，得出的結論可以為余熱鍋爐的設計和運行調節提供理論參考。 - According to the new varying operation conditions theory, it introduces a new type and exact method to calculate the exhaust steam enthalpy.
根據此變工況理論，給出了計算排汽焓的新型準確的方法。
