“floor of coal seam”的概念、定义、翻译、参考文献-科学参考

单词	floor of coal seam
释义	floor of coal seam Encyclopedia 理学煤炭地质勘查释 floor of coal seam煤层底板在正常顺序的含煤岩系剖面中，直接伏于煤层下面的岩石。
随便看	serial number serialograph Serial on Couplets on Hall Pillars Serial on Examination Essays Serial on Fiction Writing serial-parallel conversion serial-parallel converter Serial Pictures Serial Pictures Defense serial port serial position effect serial printer serial processing Serial Product Development Engineering serial publication serial pull serial reaction time serial regression serial rights serial ring serial scheduling serial scheme serial subgroup serial synapse serial task

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