水平岩层
The significance of the heavy mineral provinces in horizontal strata correlation, and in indicating sedimentary environment and detrital sediment features and sources are also discussed.
文章还探讨了重矿物组合分区对横向地层对比、沉积环境、碎屑沉积特征和物质来源的意义。
Calculation of Horizontal Strata and Surface Movements Induced by Underground Extraction
开挖引起的水平岩层及地表移动计算
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