The problems, that the electric cable was heavy,liable to be damaged, liable to be interfered by electromagnetism, and that the distance of signal transmission was far, were resolved by using magnetism resistance multi-shot deviator of memory type in measurement of borehole deviation. The data was stored in memory card in place of cable transmission.
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周策,陈文俊.存储式磁阻多点连续测斜仪的研制[J].钻探工程,2005,32(7):41-42,49.ZHOU Ce, CHEN Wen-jun. Development of Magnetism Resistance Multi-shot Deviator of Memory Type[J]. Drilling Engineering, 2005,32(7):41-42,49.