instrumental amplifier的用法和样例：
例句
- The analog input circuitry contains the analog multiplexer, the instrumentation amplifier, and the sample-and-hold circuitry.
模拟输入电路包含模拟多路复用器，仪表放大器，以及采样保持电路。 - You must carefully choose insulation and apply guarding potentials, and you must use an amplifier with picoampere input-bias currents.
提取传感器信号的一个方法是使用仪表放大器，它只放大传感器所产生的电位。
