“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	spectroheliography spectrohelioimaging spectroheliometer spectrohelioscope spectrohelioscopy spectrolog spectrology spectrometer spectrometric spectrometric control spectrometry spectromicroscope spectromodulator spectrophone spectrophosphorimetry spectrophoto fluorometer spectrophotofluorometer spectrophotograph spectrophotography spectrophotometer spectrophotometric gradient spectrophotometric method spectrophotometric standard star spectrophotometric temperature spectrophotometric titrimetry

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