Has analyzed the Helmholtz coil center region axial magnetic field distribution, gave one kind to survey 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。
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。
In rice field, chironomid midges are very abundant. Currently, our knowledge about chironomid midges in rice field is limited to the species survey as a neutral group.
目前我国关于稻田摇蚊的研究局限于种类描述和将摇蚊作为一类中性昆虫的调查。
Since 1980 when he started to work in Changqing Oil Field of China Petrol until now, he has done work such as geodesic survey, field exploration, and press-photography and so on.
1980年在中国石油长庆油田参加工作至今，做过大地测量、野外勘探、摄影记者等职业。
In this paper, for geological survey called for the deployment of field work for the smooth conduct field work to provide technical guidance.
本文主要针对地质调查要求对野外工作进行部署，为野外工作的顺利进行提供技术指导。
The construction of the field investigation map is an important task which can guarantee the smooth performance of field survey so as to obtain complete and reliable data.
制作野外调查图是保证野外调查顺利进行，从而获得完整可靠数据资料的重要工作。
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.
野外地震资料采集的质量直接关系到地震勘探的成败。保证野外资料采集质量的关键是采集参数的选择。
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.
野外地震资料采集的质量直接关系到地震勘探的成败。保证野外资料采集质量的关键是采集参数的选择。
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