通过沿着螺旋槽刻划针的振动，声音被记录到传统的唱片上。

Sounds are recorded on ordinary records by etching the vibrations of a needle along a spiraling groove.

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针的振动通过扬声器得到放大，现在他拥有了一架电吉他。

The needle's vibrations were amplified by the radio, and now he had an electric guitar.

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图1。弹针，此处显示的是单独使用的或作为连接器系统的一部分，经过本文作者所在公司进行的严格振动测试。

FIGURE 1. Spring contacts, shown here as stand-alones and as part of connector systems, stood up to rugged vibration testing conducted by the employer of this article's author.

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