“coal rake seam”的概念、定义、翻译、参考文献-科学参考

单词	coal rake seam
释义	coal rake seam 煤层
随便看	ultraviolet target radiometer ultraviolet technique ultraviolet telescope ultraviolet television microscope ultraviolet therapy ultraviolet treatment ultraviolet vidicon ultraviolet visible detector ultraviolet wavelength ultra vires ultraviscoson ultravisible ultravisuscope ultravulcanian ultrawear-resistant material ultrawhite ultra-white region ultra wide-angle lens ultra wide band signal generator ultra-X ray ultromotivity ultron Ultron Ulva dactylifera ulvospinel

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