impeller diameter reduction

例句：

1. 1.The impeller diameter reduction is crucial for the efficiency of the turbine.
   叶轮直径减小对于涡轮机的效率至关重要。
2. 2. During the design phase, engineers carefully consider the impact of impeller diameter reduction on the overall system performance.
   在设计阶段，工程师们仔细考虑了叶轮直径减小对整个系统性能的影响。
3. 3.The reduction in impeller diameter has led to a significant improvement in the power generation capacity of the turbine.
   叶轮直径的减小已经显著提高了涡轮发电能力。