It is a very important problem to protect seismic precursor observation stations against lightning, but the technique of lightning protection has not been up to standard yet in the world.
地震前兆台站的防雷问题是一个十分重要的问题，然而防雷技术目前在国际上尚未过关。
It is a very important problem to protect seismic precursor observation stations against lightning, but the technique of lightning protection has not been up to standard yet in the world.
地震前兆台站的防雷问题是一个十分重要的问题，然而防雷技术目前在国际上尚未过关。
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