But the line located in the low frequency of ship noise spectrum has high intensity and stability. This fact provides new idea in estimating target motion parameters.

而处于舰船噪声低频区的线谱具有很高的强度和稳定度，这一事实为估计目标运动要素提供了新的思路。

youdao

If input sigmal is supwrimpsed with high-frequency noise use a low-pass filter in the input signal line.

若输入信号伴随高频干扰，应在线里用高频过滤器。

youdao

The module design contains transmission line, bias and APC circuit of LD, low noise and high linearity RF circuit, FSK modern, monitor and control circuit design and PCB layout.

本文重点进行了光模块主要的电路包括传输线、LD偏置电路与APC电路、低噪声高线性射频电路、FSK调制与解调功能电路与监视控制功能电路的设计。

youdao

Substations and transformer boxes eventually reduce the power to the 110 volts that toast your muffin in the morning, but the electrical noise on a high-voltage line can destroy data signals immediately.

FORBES: Magazine Article