• 1. At Maximum Efficiency: 最大效率点
• 2. speed at maximum efficiency: 最大效率时的转速
• 3. Torque at Maximum Efficiency: 最大效率时的转矩

• 1.Defrost the fridge regularly so that it works at maximum efficiency.
  定期给冰箱除霜能取得最大效率。
  dict.yoduao.com
• 2.Defrost the fridge regularly so that it works at maximum efficiency .
  定期给冰箱除霜，以便它能发挥其最高效率。
  dict.yoduao.com
• 3.To keep your ship moving through the water at maximum efficiency, you have to keep scraping the barnacles off its bottom.
  在湍急的河流中，要让船只以最快的速度前进，你必须不断刮除积附在船底的障碍物。
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