It is suggested that the collection of following information on drill core record compiling, core orientation, mine opening geological record compiling, etc., should be strengthened from now...
建议今后从地表填图、钻孔岩心编录、岩心定向、坑道编录等方面加强工程地质资料的收集。
It is practically proved that frequency distribution of drill-core recovery is partial.
实践证明，岩心钻探取心率的频率分布是偏态的。
It is practically proved that frequency distribution of drill-core recovery is partial.
实践证明，岩心钻探取心率的频率分布是偏态的。
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