这些电子器件使地震仪变得笨重，难以在地球内部等炎热环境下使用。
The electronics make the instrument bulky and hard to use in hot environments, like the interior of the Earth.
鉴于测震中电子放大地震仪放大器的输出动态范围窄的缺陷，笔者作了自动换档衰减放大倍数的电路技术设计。
For overcoming the shortcoming of narrow output dynamic range of the electronic-amplifying seismograph, the Authors have designed a kind of circuit for automatic gain control.
每个地震仪的运动都被电子扩大并记录在记录中心。
The ground motion at each seismometer is amplified and recorded electronically at a central recording site.
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