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- At the large flow rate condition, the blade passing frequency is also dominative in the pressure fluctuations, but at the small flow rate condition the rotation frequency becomes dominative. 在大流量工况下，隔舌处和隔板起始端压力脉动频率以叶片通过频率为主，而小流量工况下以叶轮转频为主。
- Experimental results show that under the effect of the rotor wake, the dominant frequencies of pressure fluctuations on stator blades are the rotor blade passing frequency (BPF) and its harmonics. 实验结果表明：在转子尾迹的影响下，静子叶片表面的波动频率是转子的尾迹频率及其倍频。
- Investigation on the characteristics of blade passing frequency of axial flow compressor at near stall conditions 轴流压气机近失速状态叶片通过频率特性研究
- blade passing frequency noise 旋转噪声
- blade passing frequency 翼通过频率
- By development of the MWE features we can achieve reductions of blade pass noise of 7dBA across the map with no impact on aerodynamic performance. 改进扩压流量槽的结构能降低7分贝的噪音且不影响空气动力性能。
- His interest in photography is only a passing fad. 他对摄影的爱好仅是一时的兴致。
- passing frequency of rolling bearing 滚动轴承通过频率
- The invader thrust the blade of his bayonet into the woman's heart. 侵略兵把刺刀的刀身刺入那个妇人的心脏。
- Prediction of TL of a simple expansion chamber demonstrates that the effect of thermo-viscosity improves the sound attenuation somewhat at the pass frequencies. 对于简单膨胀腔，传递损失的预测结果表明，热粘性效应使通过频率处的声衰减有所改善。
- A rabbit get catch in the blade of the reaper. 一只兔子被卷到收割机的刀刃中去了。
- The blade is chipped in a few places. 刀锋有几个地方缺口。
- He hasn't a dog's chance of passing the exam. 他这次考试毫无及格的可能。
- A passing car splashed mud on my new trousers. 路过的一辆车把泥水溅到我的新裤子上了。
- He mentioned in passing that he had a new car. 他顺便提到他有一辆新汽车。
- The feeling deepened with the passing of the years. 这种感觉一年一年地加深了。
- The boy was chucking stones at passing cars. 这个男孩向路过的车辆扔石头。
- In the street a motorcade was passing. 一长列汽车从街头驰过。
- A passing truck banged up the mailbox. 一辆过路的卡车把邮筒撞坏了。
- The expanded area of a leaf or petal; a blade. 叶片叶子或瓣的延展部分; 叶子
