实践证明，瞬变电磁法是探测金属矿体、小窑采空区等地质异常体的一种有效手段。
Practices demonstrate that the method is an effective means to detect geologic anomaly bodies of metal ore body and small mine gob area.
采用锤击法，利用冲击激励的宽频特性，研究了金属结构红外探测器的共振特性及影响振动噪声的力学因素。
Mechanical factors effecting on the vibration noise and resonance performance of IR detector were analyzed for the method of impact excitation using a hammer.
管线探测的难点是在非金属管线，当采用地质雷达方法无法取得良好的成果时，可以采用高密度电阻率法这一高新技术。
The difficulty in pipe-detecting is the non-metallic pipe When the use of ground penetrating radar can not achieve good results, we can use another high-tech-high-density resistivity.
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