这些方法也适用于工程地质和考古调查，为侦查洞穴，孔洞，溶洞，裂隙带和金属物体。
These methods are also applied in engineering geology archeological investigations for the detection of caves, voids, caverns, fractured zones metallic objects.
这些方法也适用于工程地质和考古调查，为侦查洞穴，孔洞，溶洞，裂隙带和金属物体。
These methods are also applied in engineering geology and archeological investigations for the detection of caves, voids, caverns, fractured zones and metallic objects.
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