This is a liquid volume quantity survey device for surveyingstation of the oil industry.
本发明属电器产品，主要用于石油工业系统的站井产液量的测量。
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In this paper, we study a Technique of building 3d digital battlefield environment by satellite image information, satellite surveyingstation information, and others.
To unify the magnetic field level of the whole area in Marine geomagnetism surveying, the base value of the secondary base station must be reduced to the main base value.