ECG preamplifier

例句：

1. 1. The ECG preamplifier is crucial for accurate readings during an electrocardiogram (ECG).
   心电图前置放大器在心电图读数过程中至关重要。
2. 2. The preamplifier in the ECG machine is designed to enhance the signal quality before it reaches the main processor.
   心电图机中的前置放大器设计用来增强信号质量，使其在传输到主处理器之前得到提升。
3. 3. The preamplifier in the ECG machine helps to filter out noise and interference, ensuring accurate readings.
   心电图机中的前置放大器有助于滤除噪声和干扰，确保读数的准确性。