It has been developed for the improvement of the digital seismic station, and is an alternate production of the model JD-2 deep well seismometer.
它是为井下地震台的数字化改造而研制的，是JD - 2型地震仪的替代产品。
It has been developed for the improvement of the digital seismic station, and is an alternate production of the model JD-2 deep well seismometer.
它是为井下地震台的数字化改造而研制的，是JD - 2型地震仪的替代产品。
应用推荐