What the senior engineer knew was the connection between two sound components — such as receiver, mixer, amplifier, and speakers — went beyond two copper wires and some insulation.

这位资深工程师所知道的就是两个音响部件之间的连接，两段铜线和一些绝缘介质之间的接收器、混音器、放大器和扬声器。

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These are hooked to a receiver, an amplifier, speakers, a mixer and various other pieces of electronic music equipment.

它连接着一个接收器，一个喇叭筒，扬声器，混合器和各种其他不同的电子音乐仪器。

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This paper investigates various combined frequency interference in integrated and double-converted transceivers, and points out that the reason is the non-linearity of frequency mixer and amplifier.

研究了一体化二次变频收发信机中各种组合频率干扰的产生原因：主要是由于混频器和放大器的非线性。

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