blade wheel的用法和样例：
例句
- Changing meridional shape and blade angle can have large effects on the blade loading distribution.
叶轮进口尺寸相同的情况下，子午形面和叶片角的变化对叶片负荷分布有较大影响。 - The relationship between unsteady flow and blade loading distributions is very important in the design of turbomachinery.
叶轮机内部非定常流动与叶片表面负荷分布之间的关系对于叶轮机的设计非常重要。
