其电机加上电子反馈电路增加强度可以在所有的速度水平相一致的性能。
The increased strength of its motor plus electronic feedback circuitry enables consistent performance at all speed levels.
JD - 2f型井下地震计是在JD - 2型深井地震仪的基础上，经过进一步的技术改进并引入电子反馈技术而研制成功的。
The model JD-2F bore-hole seismometer has been successfully developed on the basis of the model JD-2 deep well seismometer after improving technology and introducing electronic feedback technology.
收集客户反馈的电子邮件表单。
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