The high frequency noise contains current ripple noise and thermal noise.

高频噪声包括电流纹波与热噪声。

So, our work focuses on how to reduce the thermal noise of image intensifier.

本文工作的重点就围绕如何降低像增强器的热噪声而展开。

Normally, the thermal noise can be avoided by decreasing the temperature of device.

降低热噪声的工作主要就是如何对像增强器光阴极进行降温。

This charge movement results in noise, which is often called Johnson or thermal noise.

这种电荷的运动产生了噪声，通常称为约翰逊噪声或热噪声。

The noise mainly comes from the thermal noise of resistors and the flicker noise of MOSFETs.

接收机中的噪声主要是电路中电阻的热噪声和MOS器件的闪烁噪声。