• An automatic radon measuring instrument type JSZ-2 for observing the continuous change of radon concentration of underground water in the search of earthquake precursors is described in this paper.

    本文描述了一种用于试验研究地震前兆观测地下水氡气浓度连续变化设备——JSZ - 2自动

    youdao

  • An automatic radon measuring instrument type JSZ-2 for observing the continuous change of radon concentration of underground water in the search of earthquake precursors is described in this paper.

    本文描述了一种用于试验研究地震前兆观测地下水氡气浓度连续变化设备——JSZ - 2自动

    youdao

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