... 唱机前置放大器电路 Phono Preamplifier 接收机前置放大器电路 receiver preamplifier circuits of 前置放大器印刷电路板 pre-amplifier printed circuit board ...
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光接收机前端放大电路主要由两个关键电路构成：前置放大器和主放大器。
The front-end amplifier for optical receiver is made up of two important circuits: preamplifier and main amplifier.
在用于光纤传输系统的几个功能电路中，构成光接收机前端放大电路的前置放大器和主放大器是两个关键电路。
In the building blocks of an optical transmission system, the pre-amplifier and the main amplifier are the critical parts.
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