Such storms cause considerable disruption in magnetic prospecting operation.
这种磁暴对磁法勘探产生严重的破坏。
This principle is important in magnetic prospecting only insofar as it forms the basis.
这种原理就其构成基础而言，在磁法勘探中也是重要的。
After magnetic prospecting the lava, it shows the location before final melting of the metal in the lava.
对火山岩进行的磁研究显示了这些火山岩中的金属在最终熔化前的方位。
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