bandpass flatness

例句：

1. 1. The bandpass filter is used to remove high-frequency noise from the signal.
   带通滤波器用于从信号中去除高频噪声。
2. 2. The flatness of the surface is critical for the stability of the structure.
   表面平坦度对于结构的稳定性至关重要。
3. 3.The engineer measured the bandpass flatness of the circuit and found it to be within acceptable limits.
   工程师测量了电路的带通平坦度，并发现它处于可接受的范围内。