利用前置放大器和滤波器有效滤除掉呼吸，心电，人体等干扰。

Preamplifier and filter were used for cancellation of respiratory ECG, body interference.

youdao

利用前置放大器和滤波器有效滤除掉呼吸，心电，人体等干扰。

Preamplifier and filter were used for cancellation of respiratory ECG, body interference.

youdao