Has analyzed the Helmholtz coil center region axial magnetic field distribution, gave one kind tosurvey the Helmholtz coil magnetic field distributed one new method.
分析了亥姆霍兹线圈中心区域轴向磁场的分布，给出了一种测量亥姆霍兹线圈磁场分布的一种新方法。
2
Methods Using documents review, interview and questionnaire survey, field observation and field visit to collect data and evaluate the effect.
方法采用定量研究与定性研究相结合的方法进行评估，包括文献阅读、访谈、问卷调查、现场观察与考察。
3
The quality of field seismic data acquisition is crucial to the success of seismic survey, while the key to the high quality of field data acquisition is the selection of acquisition parameters.