blade wake meaning in English

桨叶伴流

Flow separation produces pressure fluctuations of large amplitudes , possibly with the dominant frequencies differ from up - stream blade wake passing frequency and its harmonics
尾缘气流分离产生的压力波动频谱中含有上游叶片尾迹频率及其倍频的分量，但其频谱可能比较复杂，并非单一地受上游叶片尾迹影响。
On the rotor blade pressure surface , the dominant frequencies of unsteady surface pressure are the up - stream blade wake passing frequency and its harmonics , and the amplitudes of pressure fluctuations decrease from leading edge to trailing edge
转子叶片吸力面非定常压力受叶片附面层和上游叶片尾迹共同影响，其主导频率为上游叶片尾迹频率及其倍频，但是在吸力面前部气流加速区压力波动幅度沿流向增大，而在吸力面后部气流减速区压力波动幅度沿流向减小。