... 方位图 azimuth diagram; bearing diagram; directional diagram; orientation chart; orientation diagram; position chart 井位图 geological base map; well location map 品位图 assay map; assay plan ...
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The contour map of coal-floor is the most important geological map in the production of coal-mine. It is the base of design, production and reserve-counting of coal-mine.
煤层底板等高线图是煤矿生产中最重要的地质图件，是煤矿设计、生产、储量计算的基础。
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